101
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Shourav MK, Choi J, Kim JK. Visualization of superficial vein dynamics in dorsal hand by near-infrared imaging in response to elevated local temperature. JOURNAL OF BIOMEDICAL OPTICS 2021; 26:JBO-200367R. [PMID: 33624459 PMCID: PMC7900829 DOI: 10.1117/1.jbo.26.2.026003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Accepted: 02/03/2021] [Indexed: 05/08/2023]
Abstract
SIGNIFICANCE Dry or moist skin-contact thermal stimulation for vein puncture (VP) and vein cannulation (VC) may not be feasible for sensitive skin. For a damaged, burned, or dark skin, near-infrared (NIR) imaging is preferred to visualize a vein. Postprocessing of NIR images is always required because the skin is a reflective material and veins need segmentation for quantitative analysis. AIM Our pilot study aims to observe the effect of noncontact local heating on the superficial metacarpal veins in the dorsal surface of the hand and to visualize vein dynamics using an NIR imaging system. APPROACH Our experiment consists of studies A and B at two ambient temperatures, 19°C and 25°C. A simple reflection-based NIR imaging system was installed to acquire sequential vein images for 5 min before and after applying 10 min of radiant thermal stimulation. To measure the vein diameter (VD), we trained a convolutional neural network (CNN) on sequential raw images to predict vein-segmentation masks as output images. Later these masked images were postprocessed for the VD measurements. RESULTS The average VD was significantly increased after thermal stimulation in study A. The maximum increments in VD were 39.3% and 9.19%, 1 min after thermal stimulation in studies A and B, respectively. Both the VD and skin temperature (Tskin) follow negative exponentials in time, and the VD is proportional to Tskin. A multiple linear-regression model was made to predict the final VD. A significant difference was observed in the change of the VD. CONCLUSIONS NIR imaging with CNN can be used for quantitative analyses of vein dynamics. This finding can be further extended to develop real-time, image-guided medical devices by integrating them with a radiant heater and to assist medical practitioners in achieving high success rates for VP or VC.
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Affiliation(s)
- Mohiuddin Khan Shourav
- Kookmin University, Graduate School, Department of Mechanical Engineering, Seoul, Republic of Korea
| | - Jungil Choi
- Kookmin University, School of Mechanical Engineering, Seoul, Republic of Korea
| | - Jung Kyung Kim
- Kookmin University, School of Mechanical Engineering, Seoul, Republic of Korea
- Kookmin University, Graduate School, Department of Integrative Biomedical Science and Engineering, Seoul, Republic of Korea
- Address all correspondence to Jung Kyung Kim,
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102
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Zhang Y, Zhang Y, Wu J, Liu J, Kang Y, Hu C, Feng X, Liu W, Luo H, Chen A, Chen L, Shao L. Effects of carbon-based nanomaterials on vascular endothelia under physiological and pathological conditions: interactions, mechanisms and potential therapeutic applications. J Control Release 2021; 330:945-962. [DOI: 10.1016/j.jconrel.2020.10.067] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 10/31/2020] [Accepted: 10/31/2020] [Indexed: 12/11/2022]
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103
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Wolpe AG, Ruddiman CA, Hall PJ, Isakson BE. Polarized Proteins in Endothelium and Their Contribution to Function. J Vasc Res 2021; 58:65-91. [PMID: 33503620 DOI: 10.1159/000512618] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Accepted: 10/27/2020] [Indexed: 12/11/2022] Open
Abstract
Protein localization in endothelial cells is tightly regulated to create distinct signaling domains within their tight spatial restrictions including luminal membranes, abluminal membranes, and interendothelial junctions, as well as caveolae and calcium signaling domains. Protein localization in endothelial cells is also determined in part by the vascular bed, with differences between arteries and veins and between large and small arteries. Specific protein polarity and localization is essential for endothelial cells in responding to various extracellular stimuli. In this review, we examine protein localization in the endothelium of resistance arteries, with occasional references to other vessels for contrast, and how that polarization contributes to endothelial function and ultimately whole organism physiology. We highlight the protein localization on the luminal surface, discussing important physiological receptors and the glycocalyx. The protein polarization to the abluminal membrane is especially unique in small resistance arteries with the presence of the myoendothelial junction, a signaling microdomain that regulates vasodilation, feedback to smooth muscle cells, and ultimately total peripheral resistance. We also discuss the interendothelial junction, where tight junctions, adherens junctions, and gap junctions all convene and regulate endothelial function. Finally, we address planar cell polarity, or axial polarity, and how this is regulated by mechanosensory signals like blood flow.
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Affiliation(s)
- Abigail G Wolpe
- Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, Virginia, USA.,Department of Cell Biology, University of Virginia School of Medicine, Charlottesville, Virginia, USA
| | - Claire A Ruddiman
- Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, Virginia, USA.,Department of Pharmacology, University of Virginia School of Medicine, Charlottesville, Virginia, USA
| | - Phillip J Hall
- Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, Virginia, USA
| | - Brant E Isakson
- Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, Virginia, USA, .,Department of Molecular Physiology and Biophysics, University of Virginia School of Medicine, Charlottesville, Virginia, USA,
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104
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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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105
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Mitra S, Epshtein Y, Sammani S, Quijada H, Chen W, Bandela M, Desai AA, Garcia JGN, Jacobson JR. UCHL1, a deubiquitinating enzyme, regulates lung endothelial cell permeability in vitro and in vivo. Am J Physiol Lung Cell Mol Physiol 2021; 320:L497-L507. [PMID: 33438509 DOI: 10.1152/ajplung.00492.2020] [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] [Indexed: 12/20/2022] Open
Abstract
Increasing evidence suggests an important role for deubiquitinating enzymes (DUBs) in modulating a variety of biological functions and diseases. We previously identified the upregulation of the DUB ubiquitin carboxyl terminal hydrolase 1 (UCHL1) in murine ventilator-induced lung injury (VILI). However, the role of UCHL1 in modulating vascular permeability, a cardinal feature of acute lung injury (ALI) in general, remains unclear. We investigated the role of UCHL1 in pulmonary endothelial cell (EC) barrier function in vitro and in vivo and examined the effects of UCHL1 on VE-cadherin and claudin-5 regulation, important adherens and tight junctional components, respectively. Measurements of transendothelial electrical resistance confirmed decreased barrier enhancement induced by hepatocyte growth factor (HGF) and increased thrombin-induced permeability in both UCHL1-silenced ECs and in ECs pretreated with LDN-57444 (LDN), a pharmacological UCHL1 inhibitor. In addition, UCHL1 knockdown (siRNA) was associated with decreased expression of VE-cadherin and claudin-5, whereas silencing of the transcription factor FoxO1 restored claudin-5 levels. Finally, UCHL1 inhibition in vivo via LDN was associated with increased VILI in a murine model. These findings support a prominent functional role of UCHL1 in regulating lung vascular permeability via alterations in adherens and tight junctions and implicate UCHL1 as an important mediator of ALI.
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Affiliation(s)
- Sumegha Mitra
- Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, Indiana
| | - Yulia Epshtein
- Division of Pulmonary, Critical Care, Sleep and Allergy, Department of Medicine, University of Illinois at Chicago, Chicago, Illinois
| | - Saad Sammani
- Department of Medicine, Arizona Health Sciences Center, University of Arizona, Tucson, Arizona
| | - Hector Quijada
- Department of Medicine, Arizona Health Sciences Center, University of Arizona, Tucson, Arizona
| | - Weiguo Chen
- Division of Pulmonary, Critical Care, Sleep and Allergy, Department of Medicine, University of Illinois at Chicago, Chicago, Illinois
| | - Mounica Bandela
- Division of Pulmonary, Critical Care, Sleep and Allergy, Department of Medicine, University of Illinois at Chicago, Chicago, Illinois
| | - Ankit A Desai
- Department of Medicine, Indiana University School of Medicine, Bloomington, Indiana
| | - Joe G N Garcia
- Department of Medicine, Arizona Health Sciences Center, University of Arizona, Tucson, Arizona
| | - Jeffrey R Jacobson
- Division of Pulmonary, Critical Care, Sleep and Allergy, Department of Medicine, University of Illinois at Chicago, Chicago, Illinois
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106
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Ricard N, Bailly S, Guignabert C, Simons M. The quiescent endothelium: signalling pathways regulating organ-specific endothelial normalcy. Nat Rev Cardiol 2021; 18:565-580. [PMID: 33627876 PMCID: PMC7903932 DOI: 10.1038/s41569-021-00517-4] [Citation(s) in RCA: 108] [Impact Index Per Article: 36.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 01/18/2021] [Indexed: 02/07/2023]
Abstract
Endothelial cells are at the interface between circulating blood and tissues. This position confers on them a crucial role in controlling oxygen and nutrient exchange and cellular trafficking between blood and the perfused organs. The endothelium adopts a structure that is specific to the needs and function of each tissue and organ and is subject to tissue-specific signalling input. In adults, endothelial cells are quiescent, meaning that they are not proliferating. Quiescence was considered to be a state in which endothelial cells are not stimulated but are instead slumbering and awaiting activating signals. However, new evidence shows that quiescent endothelium is fully awake, that it constantly receives and initiates functionally important signalling inputs and that this state is actively regulated. Signalling pathways involved in the maintenance of functionally quiescent endothelia are starting to be identified and are a combination of endocrine, autocrine, paracrine and mechanical inputs. The paracrine pathways confer a microenvironment on the endothelial cells that is specific to the perfused organs and tissues. In this Review, we present the current knowledge of organ-specific signalling pathways involved in the maintenance of endothelial quiescence and the pathologies associated with their disruption. Linking organ-specific pathways and human vascular pathologies will pave the way towards the development of innovative preventive strategies and the identification of new therapeutic targets.
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Affiliation(s)
- Nicolas Ricard
- grid.47100.320000000419368710Yale Cardiovascular Research Center, Department of Internal Medicine, Yale University School of Medicine, New Haven, CT USA
| | - Sabine Bailly
- grid.457348.9Université Grenoble Alpes, INSERM, CEA, BIG-Biologie du Cancer et de l’Infection, Grenoble, France
| | - Christophe Guignabert
- grid.414221.0INSERM UMR_S 999, Pulmonary Hypertension: Pathophysiology and Novel Therapies, Hôpital Marie Lannelongue, Le Plessis-Robinson, France ,grid.460789.40000 0004 4910 6535Université Paris-Saclay, Faculté de Médecine, Le Kremlin-Bicêtre, France
| | - Michael Simons
- grid.47100.320000000419368710Yale Cardiovascular Research Center, Department of Internal Medicine, Yale University School of Medicine, New Haven, CT USA ,grid.47100.320000000419368710Department of Cell Biology, Yale University School of Medicine, New Haven, CT USA
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107
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Reyes Lua AM, Tonnicchia S, Giampietro C, Mazza E, Ferrari A. Evaluation of Chemo- and Photo-toxicity of a Live Fluorescent Dye for Cell Analysis. Photochem Photobiol 2020; 97:448-452. [PMID: 33277719 DOI: 10.1111/php.13362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Accepted: 11/30/2020] [Indexed: 12/01/2022]
Abstract
Live cell imaging is used to track the dynamic adaptation of cell size and motility to various external factors. Bright-field configuration can be used for these experiments; however, the analysis can be challenging and difficult to automate. In this direction, a superior alternative is represented by the use of live cell dyes, which provide intense fluorescence from subcellular structures of living cells. Yet, the potential chemo- and photo-toxicity of the fluorophores poses the necessity of an accurate protocol optimization to avoid artefacts. Toxicity studies generally focus on cell proliferation and apoptosis, neglecting the cellular activities under investigation. Here, we present the case of SYTO 13 in combination with primary endothelial cells. The optimization of the staining procedure is tested comparing cell proliferation and motility rate. In addition, the combined effect of staining and fluorescent illumination, reporting for photochemical toxicity, is evaluated. We demonstrate that while cell viability and proliferation are mainly unaffected by the staining and imagining protocols, a significant reduction of the motility rate is induced both by the chemical dye alone and in combination with fluorescent illumination. The general implications for this procedure are discussed.
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Affiliation(s)
| | - Simone Tonnicchia
- Institute for Mechanical Systems, ETH Zurich, Zürich, Switzerland.,Swiss Federal Laboratories for Material Science and Technologies, EMPA, Dübendorf, Switzerland
| | - Costanza Giampietro
- Swiss Federal Laboratories for Material Science and Technologies, EMPA, Dübendorf, Switzerland
| | - Edoardo Mazza
- Institute for Mechanical Systems, ETH Zurich, Zürich, Switzerland.,Swiss Federal Laboratories for Material Science and Technologies, EMPA, Dübendorf, Switzerland
| | - Aldo Ferrari
- Institute for Mechanical Systems, ETH Zurich, Zürich, Switzerland.,Swiss Federal Laboratories for Material Science and Technologies, EMPA, Dübendorf, Switzerland
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108
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Jones EAV, Graupera M, van Buul JD, Huveneers S. Editorial: Endothelial Dynamics in Health and Disease. Front Physiol 2020; 11:611117. [PMID: 33329063 PMCID: PMC7711136 DOI: 10.3389/fphys.2020.611117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Accepted: 10/20/2020] [Indexed: 11/13/2022] Open
Affiliation(s)
- Elizabeth A V Jones
- Centre for Molecular and Vascular Biology, KU Leuven, Leuven, Belgium.,Department of Cardiology, Cardiovascular Research Institute Maastricht, Maastricht University, Maastricht, Netherlands
| | - Mariona Graupera
- Vascular Biology and Signalling Group, ProCURE, Oncobell Program, Institut d'Investigació Biomèdica de Bellvitge (IDIBELL), L'Hospitalet de Llobregat, Barcelona, Spain.,CIBERONC, Instituto de Salud Carlos III, Madrid, Spain
| | - Jaap D van Buul
- Sanquin Research and Landsteiner Laboratory, Leeuwenhoek Centre for Advanced Microscopy, Swammerdam Institute for Life Sciences, University of Amsterdam, Amsterdam, Netherlands
| | - Stephan Huveneers
- Department of Medical Biochemistry, Amsterdam Cardiovascular Sciences, Amsterdam University Medical Center, Location AMC, University of Amsterdam, Amsterdam, Netherlands
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109
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Claesson-Welsh L, Dejana E, McDonald DM. Permeability of the Endothelial Barrier: Identifying and Reconciling Controversies. Trends Mol Med 2020; 27:314-331. [PMID: 33309601 DOI: 10.1016/j.molmed.2020.11.006] [Citation(s) in RCA: 252] [Impact Index Per Article: 63.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 11/16/2020] [Accepted: 11/16/2020] [Indexed: 12/14/2022]
Abstract
Leakage from blood vessels into tissues is governed by mechanisms that control endothelial barrier function to maintain homeostasis. Dysregulated endothelial permeability contributes to many conditions and can influence disease morbidity and treatment. Diverse approaches used to study endothelial permeability have yielded a wealth of valuable insights. Yet, ongoing questions, technical challenges, and unresolved controversies relating to the mechanisms and relative contributions of barrier regulation, transendothelial sieving, and transport of fluid, solutes, and particulates complicate interpretations in the context of vascular physiology and pathophysiology. Here, we describe recent in vivo findings and other advances in understanding endothelial barrier function with the goal of identifying and reconciling controversies over cellular and molecular processes that regulate the vascular barrier in health and disease.
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Affiliation(s)
- Lena Claesson-Welsh
- Uppsala University, Rudbeck, SciLifeLab and Beijer Laboratories, Department of Immunology, Genetics and Pathology, Uppsala, Sweden.
| | - Elisabetta Dejana
- Uppsala University, Rudbeck, SciLifeLab and Beijer Laboratories, Department of Immunology, Genetics and Pathology, Uppsala, Sweden; IFOM-FIRC Institute of Molecular Oncology, Milan, Italy
| | - Donald M McDonald
- Cardiovascular Research Institute, University of California, San Francisco, San Francisco, CA, USA; UCSF Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, CA, USA; Department of Anatomy, University of California, San Francisco, San Francisco, CA, USA.
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110
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Kim A, Seong KM, Choi YY, Shim S, Park S, Lee SS. Inhibition of EphA2 by Dasatinib Suppresses Radiation-Induced Intestinal Injury. Int J Mol Sci 2020; 21:ijms21239096. [PMID: 33265912 PMCID: PMC7730170 DOI: 10.3390/ijms21239096] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 11/24/2020] [Accepted: 11/25/2020] [Indexed: 12/16/2022] Open
Abstract
Radiation-induced multiorgan dysfunction is thought to result primarily from damage to the endothelial system, leading to a systemic inflammatory response that is mediated by the recruitment of leukocytes. The Eph–ephrin signaling pathway in the vascular system participates in various disease developmental processes, including cancer and inflammation. In this study, we demonstrate that radiation exposure increased intestinal inflammation via endothelial dysfunction, caused by the radiation-induced activation of EphA2, an Eph receptor tyrosine kinase, and its ligand ephrinA1. Barrier dysfunction in endothelial and epithelial cells was aggravated by vascular endothelial–cadherin disruption and leukocyte adhesion in radiation-induced inflammation both in vitro and in vivo. Among all Eph receptors and their ligands, EphA2 and ephrinA1 were required for barrier destabilization and leukocyte adhesion. Knockdown of EphA2 in endothelial cells reduced radiation-induced endothelial dysfunction. Furthermore, pharmacological inhibition of EphA2–ephrinA1 by the tyrosine kinase inhibitor dasatinib attenuated the loss of vascular integrity and leukocyte adhesion in vitro. Mice administered dasatinib exhibited resistance to radiation injury characterized by reduced barrier leakage and decreased leukocyte infiltration into the intestine. Taken together, these data suggest that dasatinib therapy represents a potential approach for the protection of radiation-mediated intestinal damage by targeting the EphA2–ephrinA1 complex.
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Affiliation(s)
- Areumnuri Kim
- Laboratory of Radiation Exposure and Therapeutics, National Radiation Emergency Medical Center, KIRAMS, Seoul 01812, Korea; (S.S.); (S.P.); (S.S.L.)
- Correspondence:
| | - Ki Moon Seong
- Laboratory of Biodosimetry, National Radiation Emergency Medical Center, KIRAMS, Seoul 01812, Korea; (K.M.S.); (Y.Y.C.)
| | - You Yeon Choi
- Laboratory of Biodosimetry, National Radiation Emergency Medical Center, KIRAMS, Seoul 01812, Korea; (K.M.S.); (Y.Y.C.)
| | - Sehwan Shim
- Laboratory of Radiation Exposure and Therapeutics, National Radiation Emergency Medical Center, KIRAMS, Seoul 01812, Korea; (S.S.); (S.P.); (S.S.L.)
| | - Sunhoo Park
- Laboratory of Radiation Exposure and Therapeutics, National Radiation Emergency Medical Center, KIRAMS, Seoul 01812, Korea; (S.S.); (S.P.); (S.S.L.)
- Laboratory of Biodosimetry, National Radiation Emergency Medical Center, KIRAMS, Seoul 01812, Korea; (K.M.S.); (Y.Y.C.)
| | - Seung Sook Lee
- Laboratory of Radiation Exposure and Therapeutics, National Radiation Emergency Medical Center, KIRAMS, Seoul 01812, Korea; (S.S.); (S.P.); (S.S.L.)
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111
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Fiorenza M, Gliemann L, Brandt N, Bangsbo J. Hormetic modulation of angiogenic factors by exercise-induced mechanical and metabolic stress in human skeletal muscle. Am J Physiol Heart Circ Physiol 2020; 319:H824-H834. [PMID: 32822216 DOI: 10.1152/ajpheart.00432.2020] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
This study used an integrative experimental model in humans to investigate whether muscle angiogenic factors are differentially modulated by exercise stimuli eliciting different degrees of mechanical and metabolic stress. In a randomized crossover design, 12 men performed two low-volume high-intensity exercise regimens, including short sprint intervals (SSI) or long sprint intervals (LSI) inducing pronounced mechanical/metabolic stress, and a high-volume moderate-intensity continuous exercise protocol (MIC) inducing mild but prolonged mechanical/metabolic stress. Gene and protein expression of angiogenic factors was determined in vastus lateralis muscle samples obtained before and after exercise. Exercise upregulated muscle VEGF mRNA to a greater extent in LSI and MIC compared with SSI. Analysis of angiogenic factors sensitive to shear stress revealed more marked exercise-induced VEGF receptor 2 (VEGF-R2) mRNA responses in MIC than SSI, as well as greater platelet endothelial cell adhesion molecule (PECAM-1) and endothelial nitric oxide synthase (eNOS) mRNA responses in LSI than SSI. No apparent exercise-induced phosphorylation of shear stress-sensory proteins VEGF-R2Tyr1175, PECAM-1Tyr713, and eNOSSer1177 was observed despite robust elevations in femoral artery shear stress. Exercise evoked greater mRNA responses of the mechanical stretch sensor matrix metalloproteinase-9 (MMP9) in SSI than MIC. Exercise-induced mRNA responses of the metabolic stress sensor hypoxia-inducible factor-1α (HIF-1α) were more profound in LSI than SSI. These results suggest that low-volume high-intensity exercise transcriptionally activates angiogenic factors in a mechanical/metabolic stress-dependent manner. Furthermore, the angiogenic potency of low-volume high-intensity exercise appears similar to that of high-volume moderate-intensity exercise, but only on condition of eliciting severe mechanical/metabolic stress. We conclude that the angiogenic stimulus produced by exercise depends on both magnitude and protraction of myocellular homeostatic perturbations.NEW & NOTEWORTHY Skeletal muscle capillary growth is orchestrated by angiogenic factors sensitive to mechanical and metabolic signals. In this study, we employed an integrative exercise model to synergistically target, yet to different extents and for different durations, the mechanical and metabolic components of muscle activity that promote angiogenesis. Our results suggest that the magnitude of the myocellular perturbations incurred during exercise determines the amplitude of the angiogenic molecular signals, implying hormetic modulation of skeletal muscle angiogenesis by exercise-induced mechanical and metabolic stress.
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Affiliation(s)
- M Fiorenza
- Section of Integrative Physiology, Department of Nutrition, Exercise and Sports, University of Copenhagen, Copenhagen, Denmark
| | - L Gliemann
- Section of Integrative Physiology, Department of Nutrition, Exercise and Sports, University of Copenhagen, Copenhagen, Denmark
| | - N Brandt
- Section of Integrative Physiology, Department of Nutrition, Exercise and Sports, University of Copenhagen, Copenhagen, Denmark
| | - J Bangsbo
- Section of Integrative Physiology, Department of Nutrition, Exercise and Sports, University of Copenhagen, Copenhagen, Denmark
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112
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Roux E, Bougaran P, Dufourcq P, Couffinhal T. Fluid Shear Stress Sensing by the Endothelial Layer. Front Physiol 2020; 11:861. [PMID: 32848833 PMCID: PMC7396610 DOI: 10.3389/fphys.2020.00861] [Citation(s) in RCA: 137] [Impact Index Per Article: 34.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Accepted: 06/26/2020] [Indexed: 12/21/2022] Open
Abstract
Blood flow produces mechanical frictional forces, parallel to the blood flow exerted on the endothelial wall of the vessel, the so-called wall shear stress (WSS). WSS sensing is associated with several vascular pathologies, but it is first a physiological phenomenon. Endothelial cell sensitivity to WSS is involved in several developmental and physiological vascular processes such as angiogenesis and vascular morphogenesis, vascular remodeling, and vascular tone. Local conditions of blood flow determine the characteristics of WSS, i.e., intensity, direction, pulsatility, sensed by the endothelial cells that, through their effect of the vascular network, impact WSS. All these processes generate a local-global retroactive loop that determines the ability of the vascular system to ensure the perfusion of the tissues. In order to account for the physiological role of WSS, the so-called shear stress set point theory has been proposed, according to which WSS sensing acts locally on vessel remodeling so that WSS is maintained close to a set point value, with local and distant effects of vascular blood flow. The aim of this article is (1) to review the existing literature on WSS sensing involvement on the behavior of endothelial cells and its short-term (vasoreactivity) and long-term (vascular morphogenesis and remodeling) effects on vascular functioning in physiological condition; (2) to present the various hypotheses about WSS sensors and analyze the conceptual background of these representations, in particular the concept of tensional prestress or biotensegrity; and (3) to analyze the relevance, explanatory value, and limitations of the WSS set point theory, that should be viewed as dynamical, and not algorithmic, processes, acting in a self-organized way. We conclude that this dynamic set point theory and the biotensegrity concept provide a relevant explanatory framework to analyze the physiological mechanisms of WSS sensing and their possible shift toward pathological situations.
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Affiliation(s)
- Etienne Roux
- Inserm, UMR 1034, Biology of Cardiovascular Diseases, University of Bordeaux, Bordeaux, France.,UMR 8560 IHPST - Institut d'Histoire et de Philosophie des Sciences et des Techniques, CNRS, Université Paris 1 Panthéon-Sorbonne, Paris, France
| | - Pauline Bougaran
- Inserm, UMR 1034, Biology of Cardiovascular Diseases, University of Bordeaux, Bordeaux, France
| | - Pascale Dufourcq
- Inserm, UMR 1034, Biology of Cardiovascular Diseases, University of Bordeaux, Bordeaux, France
| | - Thierry Couffinhal
- Inserm, UMR 1034, Biology of Cardiovascular Diseases, University of Bordeaux, Bordeaux, France
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113
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Li X, Redfors B, Sáinz-Jaspeado M, Shi S, Martinsson P, Padhan N, Scharin Täng M, Borén J, Levin M, Claesson-Welsh L. Suppressed Vascular Leakage and Myocardial Edema Improve Outcome From Myocardial Infarction. Front Physiol 2020; 11:763. [PMID: 32733273 PMCID: PMC7363985 DOI: 10.3389/fphys.2020.00763] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Accepted: 06/11/2020] [Indexed: 12/24/2022] Open
Abstract
Aim The acute phase of myocardial infarction (MI) is accompanied by edema contributing to tissue damage and disease outcome. Here, we aimed to identify the mechanism whereby vascular endothelial growth factor (VEGF)-A induces myocardial edema in the acute phase of MI to eventually promote development of therapeutics to specifically suppress VEGFA-regulated vascular permeability while preserving collateral vessel formation. Methods and Results VEGFA regulates vascular permeability and edema by activation of VEGF receptor-2 (VEGFR2), leading to induction of several signaling pathways including the cytoplasmic tyrosine kinase c-Src. The activated c-Src in turn phosphorylates vascular endothelial (VE)-cadherin, leading to dissociation of endothelial adherens junctions. A particular tyrosine at position 949 in mouse VEGFR2 has been shown to be required for activation of c-Src. Wild-type mice and mice with phenylalanine replacing tyrosine (Y) 949 in VEGFR2 (Vegfr2 Y949F/Y949F ) were challenged with MI through permanent ligation of the left anterior descending coronary artery. The infarct size was similar in wild-type and mutant mice, but left ventricular wall edema and fibrinogen deposition, indicative of vascular leakage, were reduced in the Vegfr2 Y949F/Y949F strain. When challenged with large infarcts, the Vegfr2 Y949F/Y949F mice survived significantly better than the wild-type strain. Moreover, neutrophil infiltration and levels of myeloperoxidase were low in the infarcted Vegfr2 Y949F/Y949F hearts, correlating with improved survival. In vivo tyrosine phosphorylation of VE-cadherin at Y685, implicated in regulation of vascular permeability, was induced by circulating VEGFA in the wild-type but remained at baseline levels in the Vegfr2 Y949F/Y949F hearts. Conclusion Suppression of VEGFA/VEGFR2-regulated vascular permeability leads to diminished edema without affecting vascular density correlating with improved myocardial parameters and survival after MI.
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Affiliation(s)
- Xiujuan Li
- Cyrus Tang Hematology Center, Collaborative Innovation Center of Hematology, State Key Laboratory of Radiation Medicine and Protection, Soochow University, Suzhou, China.,Beijer and Science for Life Laboratories, Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, Uppsala, Sweden
| | - Björn Redfors
- Department of Molecular and Clinical Medicine / Wallenberg Laboratory, Institute of Medicine, The Sahlgrenska Academy at University of Gothenburg and Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Miguel Sáinz-Jaspeado
- Beijer and Science for Life Laboratories, Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, Uppsala, Sweden
| | - Shujing Shi
- Beijer and Science for Life Laboratories, Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, Uppsala, Sweden
| | - Pernilla Martinsson
- Beijer and Science for Life Laboratories, Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, Uppsala, Sweden
| | - Narendra Padhan
- Beijer and Science for Life Laboratories, Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, Uppsala, Sweden
| | - Margareta Scharin Täng
- Department of Molecular and Clinical Medicine / Wallenberg Laboratory, Institute of Medicine, The Sahlgrenska Academy at University of Gothenburg and Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Jan Borén
- Department of Molecular and Clinical Medicine / Wallenberg Laboratory, Institute of Medicine, The Sahlgrenska Academy at University of Gothenburg and Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Malin Levin
- Department of Molecular and Clinical Medicine / Wallenberg Laboratory, Institute of Medicine, The Sahlgrenska Academy at University of Gothenburg and Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Lena Claesson-Welsh
- Beijer and Science for Life Laboratories, Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, Uppsala, Sweden
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114
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Xiong S, Hong Z, Huang LS, Tsukasaki Y, Nepal S, Di A, Zhong M, Wu W, Ye Z, Gao X, Rao GN, Mehta D, Rehman J, Malik AB. IL-1β suppression of VE-cadherin transcription underlies sepsis-induced inflammatory lung injury. J Clin Invest 2020; 130:3684-3698. [PMID: 32298238 PMCID: PMC7324198 DOI: 10.1172/jci136908] [Citation(s) in RCA: 114] [Impact Index Per Article: 28.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Accepted: 04/09/2020] [Indexed: 12/18/2022] Open
Abstract
Unchecked inflammation is a hallmark of inflammatory tissue injury in diseases such as acute respiratory distress syndrome (ARDS). Yet the mechanisms of inflammatory lung injury remain largely unknown. Here we showed that bacterial endotoxin lipopolysaccharide (LPS) and cecal ligation and puncture-induced (CLP-induced) polymicrobial sepsis decreased the expression of transcription factor cAMP response element binding (CREB) in lung endothelial cells. We demonstrated that endothelial CREB was crucial for VE-cadherin transcription and the formation of the normal restrictive endothelial adherens junctions. The inflammatory cytokine IL-1β reduced cAMP generation and CREB-mediated transcription of VE-cadherin. Furthermore, endothelial cell-specific deletion of CREB induced lung vascular injury whereas ectopic expression of CREB in the endothelium prevented the injury. We also observed that rolipram, which inhibits type 4 cyclic nucleotide phosphodiesterase-mediated (PDE4-mediated) hydrolysis of cAMP, prevented endotoxemia-induced lung vascular injury since it preserved CREB-mediated VE-cadherin expression. These data demonstrate the fundamental role of the endothelial cAMP-CREB axis in promoting lung vascular integrity and suppressing inflammatory injury. Therefore, strategies aimed at enhancing endothelial CREB-mediated VE-cadherin transcription are potentially useful in preventing sepsis-induced lung vascular injury in ARDS.
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Affiliation(s)
- Shiqin Xiong
- Department of Pharmacology and Regenerative Medicine and
- Center for Lung and Vascular Biology, University of Illinois College of Medicine, Chicago, Illinois, USA
| | - Zhigang Hong
- Department of Pharmacology and Regenerative Medicine and
- Center for Lung and Vascular Biology, University of Illinois College of Medicine, Chicago, Illinois, USA
| | - Long Shuang Huang
- Department of Pharmacology and Regenerative Medicine and
- Center for Lung and Vascular Biology, University of Illinois College of Medicine, Chicago, Illinois, USA
| | - Yoshikazu Tsukasaki
- Department of Pharmacology and Regenerative Medicine and
- Center for Lung and Vascular Biology, University of Illinois College of Medicine, Chicago, Illinois, USA
| | - Saroj Nepal
- Department of Pharmacology and Regenerative Medicine and
- Center for Lung and Vascular Biology, University of Illinois College of Medicine, Chicago, Illinois, USA
| | - Anke Di
- Department of Pharmacology and Regenerative Medicine and
- Center for Lung and Vascular Biology, University of Illinois College of Medicine, Chicago, Illinois, USA
| | - Ming Zhong
- Department of Pharmacology and Regenerative Medicine and
- Center for Lung and Vascular Biology, University of Illinois College of Medicine, Chicago, Illinois, USA
| | - Wei Wu
- Department of Pharmacology and Regenerative Medicine and
- Center for Lung and Vascular Biology, University of Illinois College of Medicine, Chicago, Illinois, USA
| | - Zhiming Ye
- Department of Nephrology, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Xiaopei Gao
- Department of Pharmacology and Regenerative Medicine and
- Center for Lung and Vascular Biology, University of Illinois College of Medicine, Chicago, Illinois, USA
| | - Gadiparthi N. Rao
- Department of Physiology, University of Tennessee Health Science Center, Memphis, Tennessee, USA
| | - Dolly Mehta
- Department of Pharmacology and Regenerative Medicine and
- Center for Lung and Vascular Biology, University of Illinois College of Medicine, Chicago, Illinois, USA
| | - Jalees Rehman
- Department of Pharmacology and Regenerative Medicine and
- Center for Lung and Vascular Biology, University of Illinois College of Medicine, Chicago, Illinois, USA
| | - Asrar B. Malik
- Department of Pharmacology and Regenerative Medicine and
- Center for Lung and Vascular Biology, University of Illinois College of Medicine, Chicago, Illinois, USA
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115
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Chen Z, Zhang C, Ma H, Huang Z, Li J, Lou J, Li B, Tu Q, Gao W. Detrimental Effect of Sitagliptin Induced Autophagy on Multiterritory Perforator Flap Survival. Front Pharmacol 2020; 11:951. [PMID: 32670067 PMCID: PMC7332881 DOI: 10.3389/fphar.2020.00951] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2020] [Accepted: 06/11/2020] [Indexed: 01/09/2023] Open
Abstract
Multiterritory perforator flap survival is commonly applied in surgical tissue reconstructions and covering of large skin defects. However, multiple risk factors such as ischemia, reperfusion injury, and apoptosis after reconstructive surgeries cause necrosis in distal parts with outcomes ranging from poor aesthetic appearance to reconstructive failure. A few studies have reported that sitagliptin (Sit) promotes angiogenesis and inhibits apoptosis. However, little is known about Sit-induced autophagy especially on the flap model. Therefore, our study investigated the effect of Sit and its induced autophagy on the perforator flap survival. Ninety male Sprague-Dawley rats were randomly separated into control, Sit, and Sit+3-methyladenine group. Results revealed that Sit significantly promoted flap survival by enhancing angiogenesis, reducing oxidative stress, and attenuating apoptosis. In addition, flap survival was further improved after co-administration with 3-methyladenine to inhibit autophagy. Overall, our results established that Sit has positive effects in promoting survival of multiterritory perforator flap. Sit-induced autophagy was detrimental for flap survival and its inhibition may further improve flap survival.
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Affiliation(s)
- Zhengtai Chen
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
- Department of Orthopaedics, Zhejiang Provincial Key Laboratory of Orthpaedics, Wenzhou, China
- Department of Second Clinical Medical, The Second Clinical Medical College of Wenzhou Medical University, Wenzhou, China
| | - Chenxi Zhang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
- Department of Orthopaedics, Zhejiang Provincial Key Laboratory of Orthpaedics, Wenzhou, China
- Department of Second Clinical Medical, The Second Clinical Medical College of Wenzhou Medical University, Wenzhou, China
| | - Haiwei Ma
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
- Department of Orthopaedics, Zhejiang Provincial Key Laboratory of Orthpaedics, Wenzhou, China
- Department of Second Clinical Medical, The Second Clinical Medical College of Wenzhou Medical University, Wenzhou, China
| | - Zihuai Huang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
- Department of Orthopaedics, Zhejiang Provincial Key Laboratory of Orthpaedics, Wenzhou, China
- Department of Second Clinical Medical, The Second Clinical Medical College of Wenzhou Medical University, Wenzhou, China
| | - Jiafeng Li
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
- Department of Orthopaedics, Zhejiang Provincial Key Laboratory of Orthpaedics, Wenzhou, China
- Department of Second Clinical Medical, The Second Clinical Medical College of Wenzhou Medical University, Wenzhou, China
| | - Junshen Lou
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
- Department of Orthopaedics, Zhejiang Provincial Key Laboratory of Orthpaedics, Wenzhou, China
- Department of Second Clinical Medical, The Second Clinical Medical College of Wenzhou Medical University, Wenzhou, China
| | - Baolong Li
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
- Department of Orthopaedics, Zhejiang Provincial Key Laboratory of Orthpaedics, Wenzhou, China
- Department of Second Clinical Medical, The Second Clinical Medical College of Wenzhou Medical University, Wenzhou, China
| | - Qi Tu
- Department of Neurosurgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
- Department of First Clinical Medical, The First Clinical Medical College of Wenzhou Medical University, Wenzhou, China
| | - Weiyang Gao
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
- Department of Orthopaedics, Zhejiang Provincial Key Laboratory of Orthpaedics, Wenzhou, China
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116
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How do Uremic Toxins Affect the Endothelium? Toxins (Basel) 2020; 12:toxins12060412. [PMID: 32575762 PMCID: PMC7354502 DOI: 10.3390/toxins12060412] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 06/15/2020] [Accepted: 06/19/2020] [Indexed: 12/11/2022] Open
Abstract
Uremic toxins can induce endothelial dysfunction in patients with chronic kidney disease (CKD). Indeed, the structure of the endothelial monolayer is damaged in CKD, and studies have shown that the uremic toxins contribute to the loss of cell–cell junctions, increasing permeability. Membrane proteins, such as transporters and receptors, can mediate the interaction between uremic toxins and endothelial cells. In these cells, uremic toxins induce oxidative stress and activation of signaling pathways, including the aryl hydrocarbon receptor (AhR), nuclear factor kappa B (NF-κB), and mitogen-activated protein kinase (MAPK) pathways. The activation of these pathways leads to overexpression of proinflammatory (e.g., monocyte chemoattractant protein-1, E-selectin) and prothrombotic (e.g., tissue factor) proteins. Uremic toxins also induce the formation of endothelial microparticles (EMPs), which can lead to the activation and dysfunction of other cells, and modulate the expression of microRNAs that have an important role in the regulation of cellular processes. The resulting endothelial dysfunction contributes to the pathogenesis of cardiovascular diseases, such as atherosclerosis and thrombotic events. Therefore, uremic toxins as well as the pathways they modulated may be potential targets for therapies in order to improve treatment for patients with CKD.
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117
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Firinu D, Arba M, Vincenzoni F, Iavarone F, Costanzo G, Cabras T, Castagnola M, Messana I, Del Giacco SR, Sanna MT. Proteomic Analysis of the Acid-Insoluble Fraction of Whole Saliva from Patients Affected by Different Forms of Non-histaminergic Angioedema. J Clin Immunol 2020; 40:840-850. [PMID: 32519288 DOI: 10.1007/s10875-020-00802-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2020] [Accepted: 06/01/2020] [Indexed: 01/17/2023]
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118
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Peroutka RJ, Buzza MS, Mukhopadhyay S, Johnson TA, Driesbaugh KH, Antalis TM. Testisin/Prss21 deficiency causes increased vascular permeability and a hemorrhagic phenotype during luteal angiogenesis. PLoS One 2020; 15:e0234407. [PMID: 32511276 PMCID: PMC7279603 DOI: 10.1371/journal.pone.0234407] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Accepted: 05/24/2020] [Indexed: 01/06/2023] Open
Abstract
Testisin (encoded by PRSS21) is a membrane anchored serine protease, which is tethered to the cell surface via a glycosylphosphatidylinositol (GPI)-anchor. While testisin is found in abundance in spermatozoa, it is also expressed in microvascular endothelial cells where its function is unknown. Here we identify testisin as a novel regulator of physiological hormone-induced angiogenesis and microvascular endothelial permeability. Using a murine model of rapid physiological angiogenesis during corpus luteal development in the ovary, we found that mice genetically deficient in testisin (Prss21-/-) show a substantially increased incidence of hemorrhages which are significantly more severe than in littermate control Prss21+/+ mice. This phenotype was associated with increased vascular leakiness, demonstrated by a greater accumulation of extravasated Evans blue dye in Prss21-/- ovaries. Live cell imaging of in vitro cultured microvascular endothelial cells depleted of testisin by siRNA knockdown revealed that loss of testisin markedly impaired reorganization and tubule-like formation on Matrigel basement membranes. Moreover testisin siRNA knockdown increased the paracellular permeability to FITC-albumin across endothelial cell monolayers, which was associated with decreased expression of the adherens junction protein VE-cadherin and increased levels of phospho(Tyr658)-VE-cadherin, without affecting the levels of the tight junction proteins occludin and claudin-5, or ZO-1. Decreased expression of VE-cadherin in the neovasculature of Prss21-/- ovaries was also observed without marked differences in endothelial cell content, vascular claudin-5 expression or pericyte recruitment. Together, these data identify testisin as a novel regulator of VE-cadherin adhesions during angiogenesis and indicate a potential new target for regulating neovascular integrity and associated pathologies.
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Affiliation(s)
- Raymond J. Peroutka
- Department of Physiology, Center for Vascular and Inflammatory Diseases, University of Maryland School of Medicine, Baltimore, Maryland, United Sates of America
| | - Marguerite S. Buzza
- Department of Physiology, Center for Vascular and Inflammatory Diseases, University of Maryland School of Medicine, Baltimore, Maryland, United Sates of America
- VA Maryland Health Care System, Baltimore, Maryland, United Sates of America
- Marlene and Stewart Greenebaum Comprehensive Cancer Center, University of Maryland School of Medicine, Baltimore, Maryland, United Sates of America
| | - Subhradip Mukhopadhyay
- Department of Physiology, Center for Vascular and Inflammatory Diseases, University of Maryland School of Medicine, Baltimore, Maryland, United Sates of America
- VA Maryland Health Care System, Baltimore, Maryland, United Sates of America
- Department of Surgery, University of Maryland School of Medicine, Baltimore, Maryland, United Sates of America
| | - Tierra A. Johnson
- Department of Physiology, Center for Vascular and Inflammatory Diseases, University of Maryland School of Medicine, Baltimore, Maryland, United Sates of America
- VA Maryland Health Care System, Baltimore, Maryland, United Sates of America
| | - Kathryn H. Driesbaugh
- Department of Physiology, Center for Vascular and Inflammatory Diseases, University of Maryland School of Medicine, Baltimore, Maryland, United Sates of America
| | - Toni M. Antalis
- Department of Physiology, Center for Vascular and Inflammatory Diseases, University of Maryland School of Medicine, Baltimore, Maryland, United Sates of America
- VA Maryland Health Care System, Baltimore, Maryland, United Sates of America
- Marlene and Stewart Greenebaum Comprehensive Cancer Center, University of Maryland School of Medicine, Baltimore, Maryland, United Sates of America
- Department of Surgery, University of Maryland School of Medicine, Baltimore, Maryland, United Sates of America
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119
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Campinho P, Vilfan A, Vermot J. Blood Flow Forces in Shaping the Vascular System: A Focus on Endothelial Cell Behavior. Front Physiol 2020; 11:552. [PMID: 32581842 PMCID: PMC7291788 DOI: 10.3389/fphys.2020.00552] [Citation(s) in RCA: 103] [Impact Index Per Article: 25.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Accepted: 04/30/2020] [Indexed: 01/16/2023] Open
Abstract
The endothelium is the cell monolayer that lines the interior of the blood vessels separating the vessel lumen where blood circulates, from the surrounding tissues. During embryonic development, endothelial cells (ECs) must ensure that a tight barrier function is maintained whilst dynamically adapting to the growing vascular tree that is being formed and remodeled. Blood circulation generates mechanical forces, such as shear stress and circumferential stretch that are directly acting on the endothelium. ECs actively respond to flow-derived mechanical cues by becoming polarized, migrating and changing neighbors, undergoing shape changes, proliferating or even leaving the tissue and changing identity. It is now accepted that coordinated changes at the single cell level drive fundamental processes governing vascular network morphogenesis such as angiogenic sprouting, network pruning, lumen formation, regulation of vessel caliber and stability or cell fate transitions. Here we summarize the cell biology and mechanics of ECs in response to flow-derived forces, discuss the latest advances made at the single cell level with particular emphasis on in vivo studies and highlight potential implications for vascular pathologies.
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Affiliation(s)
- Pedro Campinho
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch, France
- Centre National de la Recherche Scientifique, UMR 7104, Illkirch, France
- Institut National de la Santé et de la Recherche Médicale, U964, Illkirch, France
- Department of Development and Stem Cells, Université de Strasbourg, Illkirch, France
| | - Andrej Vilfan
- Department of Living Matter Physics, Max Planck Institute for Dynamics and Self-Organization, Göttingen, Germany
- Department of Condensed Matter Physics, J. Stefan Institute, Ljubljana, Slovenia
| | - Julien Vermot
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch, France
- Centre National de la Recherche Scientifique, UMR 7104, Illkirch, France
- Institut National de la Santé et de la Recherche Médicale, U964, Illkirch, France
- Department of Development and Stem Cells, Université de Strasbourg, Illkirch, France
- Department of Bioengineering, Imperial College London, London, United Kingdom
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120
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Zhang F, Zarkada G, Yi S, Eichmann A. Lymphatic Endothelial Cell Junctions: Molecular Regulation in Physiology and Diseases. Front Physiol 2020; 11:509. [PMID: 32547411 PMCID: PMC7274196 DOI: 10.3389/fphys.2020.00509] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Accepted: 04/27/2020] [Indexed: 12/13/2022] Open
Abstract
Lymphatic endothelial cells (LECs) lining lymphatic vessels develop specialized cell-cell junctions that are crucial for the maintenance of vessel integrity and proper lymphatic vascular functions. Successful lymphatic drainage requires a division of labor between lymphatic capillaries that take up lymph via open "button-like" junctions, and collectors that transport lymph to veins, which have tight "zipper-like" junctions that prevent lymph leakage. In recent years, progress has been made in the understanding of these specialized junctions, as a result of the application of state-of-the-art imaging tools and novel transgenic animal models. In this review, we discuss lymphatic development and mechanisms governing junction remodeling between button and zipper-like states in LECs. Understanding lymphatic junction remodeling is important in order to unravel lymphatic drainage regulation in obesity and inflammatory diseases and may pave the way towards future novel therapeutic interventions.
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Affiliation(s)
- Feng Zhang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
| | - Georgia Zarkada
- Department of Cellular and Molecular Physiology, Cardiovascular Research Center, Yale School of Medicine, Yale University, New Haven, CT, United States
| | - Sanjun Yi
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
| | - Anne Eichmann
- Department of Cellular and Molecular Physiology, Cardiovascular Research Center, Yale School of Medicine, Yale University, New Haven, CT, United States.,INSERM U970, Paris Cardiovascular Research Center, Paris, France
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121
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Wang P, Meng X, Li J, Chen Y, Zhang D, Zhong H, Xia P, Cui L, Zhu G, Wang H. Transcriptome profiling of avian pathogenic Escherichia coli and the mouse microvascular endothelial cell line bEnd.3 during interaction. PeerJ 2020; 8:e9172. [PMID: 32509459 PMCID: PMC7246031 DOI: 10.7717/peerj.9172] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Accepted: 04/21/2020] [Indexed: 12/20/2022] Open
Abstract
Background Avian pathogenic Escherichia coli (APEC), an important extraintestinal pathogenic E. coli, causes colibacillosis, an acute and mostly systemic disease involving multiple organ lesions such as meningitis. Meningitis-causing APEC can invade the host central nervous system by crossing the blood–brain barrier (BBB), which is a critical step in the development of meningitis. However, the bacteria-host interaction mechanism in this process remains unclear. Methods In this study, we examined E. coli and bEnd.3 cells transcriptomes during infection and mock infection to investigate the global transcriptional changes in both organisms using RNA sequencing approach. Results When APEC infected the bEnd.3 cells, several significant changes in the expression of genes related to cell junctional complexes, extracellular matrix degradation, actin cytoskeleton rearrangement, immune activation and the inflammatory response in bEnd.3 cells were observed as compared to the mock infection group. Thus, the immune activation of bEnd.3 cells indicated that APEC infection activated host defenses. Furthermore, APEC may exploit cell junction degradation to invade the BBB. In addition, amino acid metabolism and energy metabolism related genes were downregulated and the protein export pathway related genes were upregulated in APEC cultured with bEnd.3 cells, compared to that in control. Thus, APEC may encounter starvation and express virulence factors during incubation with bEnd.3 cells. Conclusion This study provides a comprehensive overview of transcriptomic changes that occur during APEC infection of bEnd.3 cells, and offers insights into the bacterial invasion strategies and the subsequent host defense mechanism.
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Affiliation(s)
- Peili Wang
- College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu, China
| | - Xia Meng
- College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu, China
| | - Jianji Li
- College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu, China
| | - Yanfei Chen
- College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu, China
| | - Dong Zhang
- College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu, China
| | - Haoran Zhong
- College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu, China
| | - Pengpeng Xia
- College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu, China
| | - Luying Cui
- College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu, China
| | - Guoqiang Zhu
- College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu, China
| | - Heng Wang
- College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China.,Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu, China
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122
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Duong CN, Vestweber D. Mechanisms Ensuring Endothelial Junction Integrity Beyond VE-Cadherin. Front Physiol 2020; 11:519. [PMID: 32670077 PMCID: PMC7326147 DOI: 10.3389/fphys.2020.00519] [Citation(s) in RCA: 72] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Accepted: 04/27/2020] [Indexed: 12/30/2022] Open
Abstract
Endothelial junctions provide blood and lymph vessel integrity and are essential for the formation of a vascular system. They control the extravasation of solutes, leukocytes and metastatic cells from blood vessels and the uptake of fluid and leukocytes into the lymphatic vascular system. A multitude of adhesion molecules mediate and control the integrity and permeability of endothelial junctions. VE-cadherin is arguably the most important adhesion molecule for the formation of vascular structures, and the stability of their junctions. Interestingly, despite this prominence, its elimination from junctions in the adult organism has different consequences in the vasculature of different organs, both for blood and lymph vessels. In addition, even in tissues where the lack of VE-cadherin leads to strong plasma leaks from venules, the physical integrity of endothelial junctions is preserved. Obviously, other adhesion molecules can compensate for a loss of VE-cadherin and this review will discuss which other adhesive mechanisms contribute to the stability and regulation of endothelial junctions and cooperate with VE-cadherin in intact vessels. In addition to adhesion molecules, endothelial receptors will be discussed, which stimulate signaling processes that provide junction stability by modulating the actomyosin system, which reinforces tension of circumferential actin and dampens pulling forces of radial stress fibers. Finally, we will highlight most recent reports about the formation and control of the specialized button-like junctions of initial lymphatics, which represent the entry sites for fluid and cells into the lymphatic vascular system.
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Affiliation(s)
| | - Dietmar Vestweber
- Department of Vascular Cell Biology, Max Planck Institute for Molecular Biomedicine, Münster, Germany
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123
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Zong S, Tang Y, Li W, Han S, Shi Q, Ruan X, Hou F. A Chinese Herbal Formula Suppresses Colorectal Cancer Migration and Vasculogenic Mimicry Through ROS/HIF-1 α/MMP2 Pathway in Hypoxic Microenvironment. Front Pharmacol 2020; 11:705. [PMID: 32499699 PMCID: PMC7242742 DOI: 10.3389/fphar.2020.00705] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Accepted: 04/29/2020] [Indexed: 12/20/2022] Open
Abstract
Various malignant tumors, including colorectal cancer, have the ability to form functional blood vessels for tumor growth and metastasis. Vasculogenic mimicry (VM) refers to the ability of highly invasive tumor cells to link each other to form vessels, which is associated with poor cancer prognosis. However, the antitumor VM agents are still lacking in the clinic. Astragalus Atractylodes mixture (AAM), a traditional Chinese medicine, has shown to inhibit VM formation; however the exact mechanism is not completely clarified. In this study, we found that HCT-116 and LoVo could form a VM network. Additionally, hypoxia increases the intracellular reactive oxygen species (ROS) level and accelerates migration, VM formation in colorectal cancer cells, while N-Acetylcysteine (NAC) could reverse these phenomena. Notably, further mechanical exploration confirmed that the matrix metalloprotease 2 (MMP2) induction is ROS dependent under hypoxic condition. On the basis, we found that AAM could effectively inhibit hypoxia-induced ROS generation, migration, VM formation as well as HIF-1α and MMP2 expression. In vivo, AAM significantly inhibits metastasis of colorectal cancer in murine lung-metastasis model. Taken together, these results verified that AAM effectively inhibits migration and VM formation by suppressing ROS/HIF-1α/MMP2 pathway in colorectal cancer under hypoxic condition, suggesting AAM could serve as a therapeutic agent to inhibit VM formation in human colorectal cancer.
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Affiliation(s)
- Shaoqi Zong
- Department of Oncology, Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China.,Graduate School of Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yufei Tang
- Department of Oncology, Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Wen Li
- Department of Dermatology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Susu Han
- Department of Oncology, Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Qi Shi
- Department of Oncology, Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Xiaofeng Ruan
- Department of Oncology, Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Fenggang Hou
- Department of Oncology, Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, China
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124
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Zhong M, Wu W, Kang H, Hong Z, Xiong S, Gao X, Rehman J, Komarova YA, Malik AB. Alveolar Stretch Activation of Endothelial Piezo1 Protects Adherens Junctions and Lung Vascular Barrier. Am J Respir Cell Mol Biol 2020; 62:168-177. [PMID: 31409093 DOI: 10.1165/rcmb.2019-0024oc] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Disruption of alveolar-capillary barriers is a major complication of high-volume mechanical ventilation referred to as "ventilator-induced lung injury." The stretching force in alveoli is transmitted to endothelial cells, increasing the tension on underlying endothelial plasma membrane. The mechanosensor Piezo1, a plasma membrane cation channel, was inducibly deleted in endothelial cells of mice (Piezo1iEC-/-), which allowed us to study its role in regulating the endothelial barrier response to alveolar stretch. We observed significant increase in lung vascular permeability in Piezo1iEC-/- mice as compared with control Piezo1fl/fl mice in response to high-volume mechanical ventilation. We also observed that human lung endothelial monolayers depleted of Piezo1 and exposed to cyclic stretch had increased permeability. We identified the calcium-dependent cysteine protease calpain as a downstream target of Piezo1. Furthermore, we showed that calpain maintained stability of the endothelial barrier in response to mechanical stretch by cleaving Src kinase, which was responsible for disassembling endothelial adherens junctions. Pharmacological activation of calpain caused Src cleavage and thereby its inactivation, and it restored the disrupted lung endothelial barrier seen in Piezo1iEC-/- mice undergoing high-volume mechanical ventilation. Our data demonstrate that downregulation of Piezo1 signaling in endothelium is a critical factor in the pathogenesis of ventilator-induced lung injury, and thus augmenting Piezo1 expression or pharmacologically activating Piezo1 signaling may be an effective therapeutic strategy.
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Affiliation(s)
- Ming Zhong
- Department of Pharmacology and.,Division of Critical Care Medicine, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Wei Wu
- Department of Pharmacology and.,Division of Critical Care Medicine, Zhongshan Hospital, Fudan University, Shanghai, China
| | | | | | | | | | - Jalees Rehman
- Department of Pharmacology and.,Division of Cardiology, Department of Medicine, University of Illinois College of Medicine, Chicago, Illinois; and
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Smith RO, Ninchoji T, Gordon E, André H, Dejana E, Vestweber D, Kvanta A, Claesson-Welsh L. Vascular permeability in retinopathy is regulated by VEGFR2 Y949 signaling to VE-cadherin. eLife 2020; 9:54056. [PMID: 32312382 PMCID: PMC7188482 DOI: 10.7554/elife.54056] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Accepted: 04/05/2020] [Indexed: 01/01/2023] Open
Abstract
Edema stemming from leaky blood vessels is common in eye diseases such as age-related macular degeneration and diabetic retinopathy. Whereas therapies targeting vascular endothelial growth factor A (VEGFA) can suppress leakage, side-effects include vascular rarefaction and geographic atrophy. By challenging mouse models representing different steps in VEGFA/VEGF receptor 2 (VEGFR2)-induced vascular permeability, we show that targeting signaling downstream of VEGFR2 pY949 limits vascular permeability in retinopathy induced by high oxygen or by laser-wounding. Although suppressed permeability is accompanied by reduced pathological neoangiogenesis in oxygen-induced retinopathy, similarly sized lesions leak less in mutant mice, separating regulation of permeability from angiogenesis. Strikingly, vascular endothelial (VE)-cadherin phosphorylation at the Y685, but not Y658, residue is reduced when VEGFR2 pY949 signaling is impaired. These findings support a mechanism whereby VE-cadherin Y685 phosphorylation is selectively associated with excessive vascular leakage. Therapeutically, targeting VEGFR2-regulated VE-cadherin phosphorylation could suppress edema while leaving other VEGFR2-dependent functions intact. The number of people with impaired vision and blindness is increasing in Western society due to the aging population and the increased prevalence of diabetes. This has led to eye diseases, such as age-related macular degeneration and diabetic retinopathy becoming more common. In both these eye diseases, new blood vessels grow in the retina – the light-sensitive part of the eye – to bring oxygen and nutrients to the tissue. However, these new blood vessels are leaky and allow molecules to leave the bloodstream and enter the retinal tissue. This causes the retina to swell and impair a person’s vision. The leaky blood supply also reduces the amount of oxygen that gets to the tissue, resulting in further damage to the retina. When tissues experience low levels of oxygen, cells start making a protein called vascular endothelial growth factor (or VEGF for short). Whilst this protein is important for helping form new blood vessels, it also makes these vessels leaky. Current treatments for age-related macular degeneration and diabetic retinopathy decrease swelling in the eye by blocking the action of VEGF. However, these treatments also cause existing blood vessels and nerve cells to die, leading to irreversible damage. Now, Smith et al. have set out to find whether the effects of VEGF can be blocked without causing further damage to existing cells. To investigate this possibility, the eyes and retinas of mice were treated with a laser or exposed to changing oxygen levels to create injuries that resembled human age-related macular degeneration and diabetic retinopathy. Each of the tested mice had specific mutations in proteins known to interact with VEGF. Fluorescent particles were injected into the bloodstream of the mice to assess how these different mutations affected blood vessel leakage: if fluorescent particles could no longer be detected outside the blood vessels, this suggested that the mutation had stopped the vessels from leaking. Further experiments showed these specific mutations affected leakage and did not prevent new blood vessels from forming. In the future it will be important to see if drugs, rather than mutations, can also decrease the leakiness of blood vessels in the retina. Such chemical compounds could then be tested in mouse experiments. If successful, these drugs might be used to treat patients with age-related macular degeneration and diabetic retinopathy.
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Affiliation(s)
- Ross O Smith
- Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Science for Life Laboratory Uppsala University, Uppsala, Sweden
| | - Takeshi Ninchoji
- Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Science for Life Laboratory Uppsala University, Uppsala, Sweden
| | - Emma Gordon
- Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Science for Life Laboratory Uppsala University, Uppsala, Sweden
| | - Helder André
- Department of Clinical Neuroscience, Division of Eye and Vision, St. Erik Eye Hospital, Karolinska Institutet, Stockholm, Sweden
| | - Elisabetta Dejana
- Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Science for Life Laboratory Uppsala University, Uppsala, Sweden.,IFOM-IEO Campus Via Adamello, Milan, Italy
| | | | - Anders Kvanta
- Department of Clinical Neuroscience, Division of Eye and Vision, St. Erik Eye Hospital, Karolinska Institutet, Stockholm, Sweden
| | - Lena Claesson-Welsh
- Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Science for Life Laboratory Uppsala University, Uppsala, Sweden
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126
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Schimmel L, Fukuhara D, Richards M, Jin Y, Essebier P, Frampton E, Hedlund M, Dejana E, Claesson-Welsh L, Gordon E. c-Src controls stability of sprouting blood vessels in the developing retina independently of cell-cell adhesion through focal adhesion assembly. Development 2020; 147:dev185405. [PMID: 32108024 PMCID: PMC7157583 DOI: 10.1242/dev.185405] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Accepted: 02/19/2020] [Indexed: 12/22/2022]
Abstract
Endothelial cell adhesion is implicated in blood vessel sprout formation, yet how adhesion controls angiogenesis, and whether it occurs via rapid remodeling of adherens junctions or focal adhesion assembly, or both, remains poorly understood. Furthermore, how endothelial cell adhesion is controlled in particular tissues and under different conditions remains unexplored. Here, we have identified an unexpected role for spatiotemporal c-Src activity in sprouting angiogenesis in the retina, which is in contrast to the dominant focus on the role of c-Src in the maintenance of vascular integrity. Thus, mice specifically deficient in endothelial c-Src displayed significantly reduced blood vessel sprouting and loss in actin-rich filopodial protrusions at the vascular front of the developing retina. In contrast to what has been observed during vascular leakage, endothelial cell-cell adhesion was unaffected by loss of c-Src. Instead, decreased angiogenic sprouting was due to loss of focal adhesion assembly and cell-matrix adhesion, resulting in loss of sprout stability. These results demonstrate that c-Src signaling at specified endothelial cell membrane compartments (adherens junctions or focal adhesions) control vascular processes in a tissue- and context-dependent manner.
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Affiliation(s)
- Lilian Schimmel
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Daisuke Fukuhara
- Uppsala University, Beijer and Science for Life Laboratories, Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala 75185, Sweden
| | - Mark Richards
- Uppsala University, Beijer and Science for Life Laboratories, Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala 75185, Sweden
| | - Yi Jin
- Uppsala University, Beijer and Science for Life Laboratories, Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala 75185, Sweden
| | - Patricia Essebier
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Emmanuelle Frampton
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Marie Hedlund
- Uppsala University, Beijer and Science for Life Laboratories, Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala 75185, Sweden
| | - Elisabetta Dejana
- Uppsala University, Beijer and Science for Life Laboratories, Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala 75185, Sweden
| | - Lena Claesson-Welsh
- Uppsala University, Beijer and Science for Life Laboratories, Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala 75185, Sweden
| | - Emma Gordon
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, Queensland 4072, Australia
- Uppsala University, Beijer and Science for Life Laboratories, Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala 75185, Sweden
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127
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INFLUENCE OF THE ACUTE INFLAMMATION AND ENDOTHELIAL DYSFUNCTION ON THE RETINAL VEIN OCCLUSION FORMATION AFTER CARDIO-SURGICAL INTERFERENCES WITH THE USE OF CARDIOPULMONARY BYPASS. EUREKA: HEALTH SCIENCES 2020. [DOI: 10.21303/2504-5679.2020.001143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Acute inflammation and endothelial dysfunction (EDF) are typical pathological processes, which determine the development of retinal vein occlusion (RVO) during cardio-surgery with the use of cardiopulmonary bypass (CB), but the connection of seromarkers according to the terms of occlusion appearance remains undefined.
The aim – to determine the influence of the acute inflammation and EDF for RVO formation after cardio-surgical interferences with the use of CB according to the terms of occlusion appearance.
Material and methods. There were selected for the research the data of 137 eyes (126 patients, the main group) with RVO after the surgery with CB. The comparison group contains the data about examination of 86 eyes (43 patients), who had not any occlusion during all term of examination. The control group consisted of 10 eyes (5 patients) without occlusion, which were examined before surgery. An ophthalmologist 2, 7, 30, 60, 90 and 180 days after cardio-surgical interference, examined patients. The content of IL-6, IL-8 and VE-cadherin in blood serum was determined by immunoenzyme technique (Bender Medsystems, Austria). Statistical data processing was performed with the use of Statistica 10 program (StatSoft, Inc., USA), regression analysis – with the use of the program package GLZ.
Results. The conduction of cardio-surgeries with the use of CB caused an increase of the interleukins content in the early period (IL-6 on the 2nd and 7th days, and IL-8 up to 30 days), while the content of VE-cadherin (VE-C) was slightly increased during almost all period of monitoring. With the availability of RVO, the content of IL-6 during all terms of occlusion appearance was significantly higher, the content of IL-6 was up to 30 days, and the content of VE-C in a greater degree was after the 7th day.
The regression analysis showed that after 1-2 days RVO appearance was directly related with the content of IL-6 and IL-8 in the blood, on the 3rd and 7th days – only with the content of IL-8, on the 8th and 30th days – with the content of all markers, and then with the content of IL-6 and VE-C. The accuracy of the prediction of the presence or absence of RVO at the appropriate period according to the calculated regression model is at least 78 % (p <0.001), what proves the influence of markers on the development of RVO.
Conclusions. The undertaken study shows the meaning of the acute inflammation and EDF by appearance of RVO with the use of CB, what justifies the application of the preventive measures - at the early stages the restriction of activity of the inflammatory process, at the later stages – prevention of EDF development.
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128
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Long YM, Yang XZ, Yang QQ, Clermont AC, Yin YG, Liu GL, Hu LG, Liu Q, Zhou QF, Liu QS, Ma QC, Liu YC, Cai Y. PM 2.5 induces vascular permeability increase through activating MAPK/ERK signaling pathway and ROS generation. JOURNAL OF HAZARDOUS MATERIALS 2020; 386:121659. [PMID: 31776080 DOI: 10.1016/j.jhazmat.2019.121659] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Revised: 11/06/2019] [Accepted: 11/09/2019] [Indexed: 06/10/2023]
Abstract
Although in-vivo exposure of PM2.5 has been suggested to initiate a disorder on vascular permeability, the effects and related mechanism has not been well defined. In this work, an obvious increase on vascular permeability has been confirmed in vivo by vein injection of PM2.5 into Balb/c mouse. Human umbilical vein vascular endothelial cells and the consisted ex-vivo vascular endothelium were used as model to investigate the effects of PM2.5 on the vascular permeability and the underlying molecular mechanism. Upon PM2.5 exposure, the vascular endothelial growth factor receptor 2 on cell membrane phosphorylates and activates the downstream mitogen-activated protein kinase (MAPK)/ERK signaling. The adherens junction protein VE-cadherin sheds and the intercellular junction opens, damaging the integrity of vascular endothelium via paracellular pathway. Besides, PM2.5 induces the intracellular reactive oxygen species (ROS) production and triggers the oxidative stress including activity decrease of superoxide dismutase, lactate dehydrogenase release and permeability increase of cell membrane. Taken together, the paracellular and transcellular permeability enhancement jointly contributes to the significant increase of endothelium permeability and thus vascular permeability upon PM2.5 exposure. This work provides an insight into molecular mechanism of PM2.5 associated cardiovascular disease and offered a real-time screening method for the health risk of PM2.5.
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Affiliation(s)
- Yan-Min Long
- Hubei Key Laboratory of Environmental and Health Effects of Persistent Toxic Substances, Institute of Environment and Health, Jianghan University, Wuhan, Hubei 430056, China
| | - Xue-Zhi Yang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Qing-Qing Yang
- Hubei Key Laboratory of Environmental and Health Effects of Persistent Toxic Substances, Institute of Environment and Health, Jianghan University, Wuhan, Hubei 430056, China
| | - Allen C Clermont
- Joslin Diabetes Center, Harvard Medical School, Boston, Massachusetts 02215, USA
| | - Yong-Guang Yin
- Hubei Key Laboratory of Environmental and Health Effects of Persistent Toxic Substances, Institute of Environment and Health, Jianghan University, Wuhan, Hubei 430056, China; State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Guang-Liang Liu
- Hubei Key Laboratory of Environmental and Health Effects of Persistent Toxic Substances, Institute of Environment and Health, Jianghan University, Wuhan, Hubei 430056, China; Department of Chemistry and Biochemistry, Southeast Environmental Research Center, Florida International University, University Park, Miami, Florida 33199, USA
| | - Li-Gang Hu
- Hubei Key Laboratory of Environmental and Health Effects of Persistent Toxic Substances, Institute of Environment and Health, Jianghan University, Wuhan, Hubei 430056, China; State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Qian Liu
- Hubei Key Laboratory of Environmental and Health Effects of Persistent Toxic Substances, Institute of Environment and Health, Jianghan University, Wuhan, Hubei 430056, China; State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Qun-Fang Zhou
- Hubei Key Laboratory of Environmental and Health Effects of Persistent Toxic Substances, Institute of Environment and Health, Jianghan University, Wuhan, Hubei 430056, China; State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Qian S Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Qian-Chi Ma
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Yu-Chen Liu
- Hubei Key Laboratory of Environmental and Health Effects of Persistent Toxic Substances, Institute of Environment and Health, Jianghan University, Wuhan, Hubei 430056, China
| | - Yong Cai
- Hubei Key Laboratory of Environmental and Health Effects of Persistent Toxic Substances, Institute of Environment and Health, Jianghan University, Wuhan, Hubei 430056, China; State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; Department of Chemistry and Biochemistry, Southeast Environmental Research Center, Florida International University, University Park, Miami, Florida 33199, USA.
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129
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Rizzelli F, Malabarba MG, Sigismund S, Mapelli M. The crosstalk between microtubules, actin and membranes shapes cell division. Open Biol 2020; 10:190314. [PMID: 32183618 PMCID: PMC7125961 DOI: 10.1098/rsob.190314] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Accepted: 02/18/2020] [Indexed: 12/16/2022] Open
Abstract
Mitotic progression is orchestrated by morphological and mechanical changes promoted by the coordinated activities of the microtubule (MT) cytoskeleton, the actin cytoskeleton and the plasma membrane (PM). MTs assemble the mitotic spindle, which assists sister chromatid separation, and contact the rigid and tensile actomyosin cortex rounded-up underneath the PM. Here, we highlight the dynamic crosstalk between MTs, actin and cell membranes during mitosis, and discuss the molecular connections between them. We also summarize recent views on how MT traction forces, the actomyosin cortex and membrane trafficking contribute to spindle positioning in isolated cells in culture and in epithelial sheets. Finally, we describe the emerging role of membrane trafficking in synchronizing actomyosin tension and cell shape changes with cell-substrate adhesion, cell-cell contacts and extracellular signalling events regulating proliferation.
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Affiliation(s)
| | - Maria Grazia Malabarba
- IEO, Istituto Europeo di Oncologia IRCCS, Milan, Italy
- Dipartimento di Oncologia ed Emato-oncologia, Università degli Studi di Milano, Milan, Italy
| | - Sara Sigismund
- IEO, Istituto Europeo di Oncologia IRCCS, Milan, Italy
- Dipartimento di Oncologia ed Emato-oncologia, Università degli Studi di Milano, Milan, Italy
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130
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Wu MA, Bova M, Berra S, Senter R, Parolin D, Caccia S, Cicardi M. The central role of endothelium in hereditary angioedema due to C1 inhibitor deficiency. Int Immunopharmacol 2020; 82:106304. [PMID: 32114411 DOI: 10.1016/j.intimp.2020.106304] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Accepted: 02/10/2020] [Indexed: 12/31/2022]
Abstract
An impairment of the endothelial barrier function underlies a wide spectrum of pathological conditions. Hereditary angioedema due to C1-inhibitor deficiency (C1-INH-HAE) can be considered the "pathophysiological and clinical paradigm" of Paroxysmal Permeability Diseases (PPDs), conditions characterized by recurrent transient primitively functional alteration of the endothelial sieving properties, not due to inflammatory-ischemic-degenerative injury and completely reversible after the acute flare. It is a rare yet probably still underdiagnosed disease which presents with localized, non-pitting swelling of the skin and submucosal tissues of the upper respiratory and gastrointestinal tracts, without significant wheals or pruritus. The present review addresses the pathophysiology of C1-INH-HAE with a focus on the crucial role of the endothelium during contact and kallikrein/kinin system (CAS and KKS) activation, currently available and emerging biomarkers, methods applied to get new insights into the mechanisms underlying the disease (2D, 3D and in vivo systems), new promising investigation techniques (autonomic nervous system analysis, capillaroscopy, flow-mediated dilation method, non-invasive finger plethysmography). Hints are given to the binding of C1-INH to endothelial cells. Finally, crucial issues as the local vs systemic nature of CAS/KKS activation, the episodic nature of attacks vs constant C1-INH deficiency, pros and cons as well as future perspectives of available methodologies are briefly discussed.
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Affiliation(s)
- Maddalena Alessandra Wu
- Department of Biomedical and Clinical Sciences, ASST Fatebenefratelli Sacco, University of Milan, Milan, Italy.
| | - Maria Bova
- Department of Translational Medical Sciences and Interdepartmental Center for Research in Basic and Clinical Immunology Sciences, University of Naples Federico II, Naples, Italy
| | - Silvia Berra
- Department of Biomedical and Clinical Sciences, ASST Fatebenefratelli Sacco, University of Milan, Milan, Italy
| | | | - Debora Parolin
- Department of Biomedical and Clinical Sciences, ASST Fatebenefratelli Sacco, University of Milan, Milan, Italy
| | - Sonia Caccia
- Department of Biomedical and Clinical Sciences, ASST Fatebenefratelli Sacco, University of Milan, Milan, Italy
| | - Marco Cicardi
- Department of Biomedical and Clinical Sciences, ASST Fatebenefratelli Sacco, University of Milan, Milan, Italy; IRCCS-ICS Maugeri, Milan, Italy
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131
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Duong CN, Nottebaum AF, Butz S, Volkery S, Zeuschner D, Stehling M, Vestweber D. Interference With ESAM (Endothelial Cell-Selective Adhesion Molecule) Plus Vascular Endothelial-Cadherin Causes Immediate Lethality and Lung-Specific Blood Coagulation. Arterioscler Thromb Vasc Biol 2020; 40:378-393. [DOI: 10.1161/atvbaha.119.313545] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Objective:
Vascular endothelial (VE)-cadherin is of dominant importance for the formation and stability of endothelial junctions, yet induced gene inactivation enhances vascular permeability in the lung but does not cause junction rupture. This study aims at identifying the junctional adhesion molecule, which is responsible for preventing endothelial junction rupture in the pulmonary vasculature in the absence of VE-cadherin.
Approach and Results:
We have compared the relevance of ESAM (endothelial cell-selective adhesion molecule), JAM (junctional adhesion molecule)-A, PECAM (platelet endothelial cell adhesion molecule)-1, and VE-cadherin for vascular barrier integrity in various mouse tissues. Gene inactivation of ESAM enhanced vascular permeability in the lung but not in the heart, skin, and brain. In contrast, deletion of JAM-A or PECAM-1 did not affect barrier integrity in any of these organs. Blocking VE-cadherin with antibodies caused lethality in ESAM
−/−
mice within 30 minutes but had no such effect in JAM-A
−/−
, PECAM-1
−/−
or wild-type mice. Likewise, induced gene inactivation of VE-cadherin caused rapid lethality only in the absence of ESAM. Ultrastructural analysis revealed that only combined interference with VE-cadherin and ESAM disrupted endothelial junctions and caused massive blood coagulation in the lung. Mechanistically, we could exclude a role of platelet ESAM in coagulation, changes in the expression of other junctional proteins or a contribution of cytoplasmic signaling domains of ESAM.
Conclusions:
Despite well-documented roles of JAM-A and PECAM-1 for the regulation of endothelial junctions, only for ESAM, we detected an essential role for endothelial barrier integrity in a tissue-specific way. In addition, we found that it is ESAM which prevents endothelial junction rupture in the lung when VE-cadherin is absent.
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Affiliation(s)
- Cao Nguyen Duong
- From the Department of Vascular Cell Biology (C.N.D., A.F.N., S.B., S.V., D.V.), Max Planck Institute for Molecular Biomedicine, Münster, Germany
| | - Astrid F. Nottebaum
- From the Department of Vascular Cell Biology (C.N.D., A.F.N., S.B., S.V., D.V.), Max Planck Institute for Molecular Biomedicine, Münster, Germany
| | - Stefan Butz
- From the Department of Vascular Cell Biology (C.N.D., A.F.N., S.B., S.V., D.V.), Max Planck Institute for Molecular Biomedicine, Münster, Germany
| | - Stefan Volkery
- From the Department of Vascular Cell Biology (C.N.D., A.F.N., S.B., S.V., D.V.), Max Planck Institute for Molecular Biomedicine, Münster, Germany
| | - Dagmar Zeuschner
- Electron Microscopy and Flow Cytometry Unit (D.Z., M.S.), Max Planck Institute for Molecular Biomedicine, Münster, Germany
| | - Martin Stehling
- Electron Microscopy and Flow Cytometry Unit (D.Z., M.S.), Max Planck Institute for Molecular Biomedicine, Münster, Germany
| | - Dietmar Vestweber
- From the Department of Vascular Cell Biology (C.N.D., A.F.N., S.B., S.V., D.V.), Max Planck Institute for Molecular Biomedicine, Münster, Germany
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Delgado-Bellido D, Bueno-Galera C, López-Jiménez L, Garcia-Diaz A, Oliver FJ. Endothelial Phosphatase VE-PTP Participates in Vasculogenic Mimicry by Preventing Autophagic Degradation of VE-Cadherin. Front Oncol 2020; 10:18. [PMID: 32117706 PMCID: PMC7025541 DOI: 10.3389/fonc.2020.00018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Accepted: 01/07/2020] [Indexed: 11/13/2022] Open
Abstract
Aberrant extra-vascular expression of VE-cadherin has been observed in metastasis associated with Vasculogenic Mimicry (VM); we have recently shown that in VM prone cells VE-cadherin is mainly in the form of phospho-VE-cadherin in Y658 allowing increased plasticity that potentiates VM development in malignant cells. In the current study, we present results to show that human malignant melanoma cells VM+, express the VE-cadherin phosphatase VE-PTP. VE-PTP forms a complex with VE-Cadherin and p120-catenin and the presence of this complex act as a safeguard to prevent VE-Cadherin protein degradation by autophagy. Indeed, VE-PTP silencing results in complete degradation of VE-cadherin with the features of autophagy. In summary, this study shows that VE-PTP is involved in VM formation and disruption of VE-PTP/VE-Cadherin/p120 complex results in enhanced autophagy in aggressive VM+ cells. Thus, we identify VE-PTP as a key player in VM development by regulating VE-cadherin protein degradation through autophagy.
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Affiliation(s)
| | | | - Laura López-Jiménez
- Instituto de Parasitología y Biomedicina López Neyra, CSIC, CIBERONC, Granada, Spain
| | - Angel Garcia-Diaz
- Instituto de Parasitología y Biomedicina López Neyra, CSIC, CIBERONC, Granada, Spain
| | - F Javier Oliver
- Instituto de Parasitología y Biomedicina López Neyra, CSIC, CIBERONC, Granada, Spain
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133
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Yang Y, Dong X, Zheng S, Sun J, Ye J, Chen J, Fang Y, Zhao B, Yin Z, Cao P, Luo L. GSTpi regulates VE-cadherin stabilization through promoting S-glutathionylation of Src. Redox Biol 2019; 30:101416. [PMID: 31927409 PMCID: PMC6957793 DOI: 10.1016/j.redox.2019.101416] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Revised: 12/09/2019] [Accepted: 12/29/2019] [Indexed: 02/06/2023] Open
Abstract
GSTpi is a Phase II metabolic enzyme which is originally considered as an important facilitator of cellular detoxification. Here, we found that GSTpi stabilized VE-cadherin in endothelial cell membrane through inhibiting VE-cadherin phosphorylation and VE-cadherin/catenin complex dissociation, and consequently maintained endothelial barrier function. Our findings demonstrated a novel mechanism that GSTpi inhibited VE-cadherin phosphorylation through suppressing the activation of Src/VE-cadherin pathway. Mass spectrometry analysis and molecular docking showed that GSTpi enhanced Src S-glutathionylation at Cys185, Cys245, and Cys400 of Src. More important, we found that GSTpi promoted S-glutathionylation of Src was essential for GSTpi to inhibit Src phosphorylation and activation. Furthermore, in vivo experiments indicated that AAV-GSTpi exerted the protective effect on pulmonary vessel permeability in the animal model of acute lung injury. This study revealed a novel regulatory effect of GSTpi on vascular endothelial barrier function and the importance of S-glutathionylation of Src induced by GSTpi in the activation of Src/VE-cadherin pathway. GSTpi regulates endothelial barrier function in response to pro-inflammatory stress. GSTpi inhibits the destabilization of membrane VE-cadherin through suppressing the activation of Src/VE-cadherin pathway. GSTpi selectively inhibits Src phosphorylation by S-glutathionylating novel cysteines of Src. GSTpi exerts the protective effect on pulmonary vessel permeability in the animal model of acute lung injury.
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Affiliation(s)
- Yang Yang
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, 210093, Jiangsu, China; Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, 210028, Jiangsu, China; Laboratory of Cellular and Molecular Biology, Jiangsu Province Academy of Traditional Chinese Medicine, Nanjing, 210028, Jiangsu, China
| | - Xiaoliang Dong
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, 210093, Jiangsu, China
| | - Shuangning Zheng
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, 210093, Jiangsu, China
| | - Jinbing Sun
- Changshu No.1 People's Hospital Affiliated to Soochow University, Changshu, 215500, China
| | - Juan Ye
- Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, 210028, Jiangsu, China; Laboratory of Cellular and Molecular Biology, Jiangsu Province Academy of Traditional Chinese Medicine, Nanjing, 210028, Jiangsu, China
| | - Jiao Chen
- Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, 210028, Jiangsu, China; Laboratory of Cellular and Molecular Biology, Jiangsu Province Academy of Traditional Chinese Medicine, Nanjing, 210028, Jiangsu, China
| | - Yuan Fang
- Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, 210028, Jiangsu, China; Laboratory of Cellular and Molecular Biology, Jiangsu Province Academy of Traditional Chinese Medicine, Nanjing, 210028, Jiangsu, China
| | - Bing Zhao
- Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, 210028, Jiangsu, China; Laboratory of Cellular and Molecular Biology, Jiangsu Province Academy of Traditional Chinese Medicine, Nanjing, 210028, Jiangsu, China
| | - Zhimin Yin
- Jiangsu Province Key Laboratory for Molecular and Medical Biotechnology, College of Life Science, Nanjing Normal University, Nanjing, 210046, Jiangsu, China.
| | - Peng Cao
- Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, 210028, Jiangsu, China; Laboratory of Cellular and Molecular Biology, Jiangsu Province Academy of Traditional Chinese Medicine, Nanjing, 210028, Jiangsu, China; Department of Pharmacology, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023, China.
| | - Lan Luo
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, 210093, Jiangsu, China.
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134
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Zamorano P, Koning T, Oyanadel C, Mardones GA, Ehrenfeld P, Boric MP, González A, Soza A, Sánchez FA. Galectin-8 induces endothelial hyperpermeability through the eNOS pathway involving S-nitrosylation-mediated adherens junction disassembly. Carcinogenesis 2019; 40:313-323. [PMID: 30624618 DOI: 10.1093/carcin/bgz002] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Revised: 12/04/2018] [Accepted: 01/04/2019] [Indexed: 12/26/2022] Open
Abstract
The permeability of endothelial cells is regulated by the stability of the adherens junctions, which is highly sensitive to kinase-mediated phosphorylation and endothelial nitric oxide synthase (eNOS)-mediated S-nitrosylation of its protein components. Solid tumors can produce a variety of factors that stimulate these signaling pathways leading to endothelial cell hyperpermeability. This generates stromal conditions that facilitate tumoral growth and dissemination. Galectin-8 (Gal-8) is overexpressed in several carcinomas and has a variety of cellular effects that can contribute to tumor pathogenicity, including angiogenesis. Here we explored whether Gal-8 has also a role in endothelial permeability. We show that recombinant Gal-8 activates eNOS, induces S-nitrosylation of p120-catenin (p120) and dissociation of adherens junction, leading to hyperpermeability of the human endothelial cell line EAhy926. This pathway involves focal-adhesion kinase (FAK) activation downstream of eNOS as a requirement for eNOS-mediated p120 S-nitrosylation. This suggests a reciprocal, yet little understood, regulation of phosphorylation and S-nitrosylation events acting upon adherens junction permeability. In addition, glutathione S-transferase (GST)-Gal-8 pull-down experiments and function-blocking β1-integrin antibodies point to β1-integrins as cell surface components involved in Gal-8-induced hyperpermeability. Endogenous Gal-8 secreted from the breast cancer cell line MCF-7 has similar hyperpermeability and signaling effects. Furthermore, the mouse cremaster model system showed that Gal-8 also activates eNOS, induces S-nitrosylation of adherens junction components and is an effective hyperpermeability agent in vivo. These results add endothelial permeability regulation by S-nitrosylation as a new function of Gal-8 that can potentially contribute to the pathogenicity of tumors overexpressing this lectin.
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Affiliation(s)
- Patricia Zamorano
- Instituto de Inmunología, Universidad Austral de Chile, Valdivia 5110566, Chile
| | - Tania Koning
- Instituto de Inmunología, Universidad Austral de Chile, Valdivia 5110566, Chile
| | - Claudia Oyanadel
- Centro de Biología Celular y Biomedicina (CEBICEM), Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Chile
| | - Gonzalo A Mardones
- Centro de Biología Celular y Biomedicina (CEBICEM), Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Chile.,Instituto de Fisiología, Valdivia, Chile.,Centro Interdisciplinario de Estudios del Sistema Nervioso (CISNe), Valdivia, Chile
| | - Pamela Ehrenfeld
- Centro Interdisciplinario de Estudios del Sistema Nervioso (CISNe), Valdivia, Chile.,Instituto de Anatomía, Histología y Patología, Universidad Austral de Chile, Valdivia, Chile
| | | | - Alfonso González
- Centro de Biología Celular y Biomedicina (CEBICEM), Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Chile.,Centro de Envejecimiento y Regeneración, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile.,Fundación Ciencia y Vida. Santiago, Chile
| | - Andrea Soza
- Centro de Biología Celular y Biomedicina (CEBICEM), Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Chile.,Centro de Envejecimiento y Regeneración, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Fabiola A Sánchez
- Instituto de Inmunología, Universidad Austral de Chile, Valdivia 5110566, Chile.,Centro Interdisciplinario de Estudios del Sistema Nervioso (CISNe), Valdivia, Chile
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135
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Kostelnik KB, Barker A, Schultz C, Mitchell TP, Rajeeve V, White IJ, Aurrand-Lions M, Nourshargh S, Cutillas P, Nightingale TD. Dynamic trafficking and turnover of JAM-C is essential for endothelial cell migration. PLoS Biol 2019; 17:e3000554. [PMID: 31790392 PMCID: PMC6907879 DOI: 10.1371/journal.pbio.3000554] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 12/12/2019] [Accepted: 11/14/2019] [Indexed: 12/26/2022] Open
Abstract
Junctional complexes between endothelial cells form a dynamic barrier that hinders passive diffusion of blood constituents into interstitial tissues. Remodelling of junctions is an essential process during leukocyte trafficking, vascular permeability, and angiogenesis. However, for many junctional proteins, the mechanisms of junctional remodelling have yet to be determined. Here, we used receptor mutagenesis, horseradish peroxidase (HRP), and ascorbate peroxidase 2 (APEX-2) proximity labelling, alongside light and electron microscopy (EM), to map the intracellular trafficking routes of junctional adhesion molecule-C (JAM-C). We found that JAM-C cotraffics with receptors associated with changes in permeability such as vascular endothelial cadherin (VE-Cadherin) and neuropilin (NRP)-1 and 2, but not with junctional proteins associated with the transmigration of leukocytes. Dynamic JAM-C trafficking and degradation are necessary for junctional remodelling during cell migration and angiogenesis. By identifying new potential trafficking machinery, we show that a key point of regulation is the ubiquitylation of JAM-C by the E3 ligase Casitas B-lineage lymphoma (CBL), which controls the rate of trafficking versus lysosomal degradation.
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Affiliation(s)
- Katja B. Kostelnik
- Centre for Microvascular Research, William Harvey Research Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, United Kingdom
| | - Amy Barker
- Centre for Microvascular Research, William Harvey Research Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, United Kingdom
| | - Christopher Schultz
- Centre for Microvascular Research, William Harvey Research Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, United Kingdom
| | - Tom P. Mitchell
- Centre for Microvascular Research, William Harvey Research Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, United Kingdom
| | - Vinothini Rajeeve
- Cell Signalling & Proteomics Group, Barts Cancer Institute, Queen Mary University of London, London, United Kingdom
| | - Ian J. White
- MRC Laboratory of Molecular Cell Biology, University College London, London, United Kingdom
| | - Michel Aurrand-Lions
- Aix Marseille University, CNRS, INSERM, Institut Paoli-Calmettes, CRCM, Marseille, France
| | - Sussan Nourshargh
- Centre for Microvascular Research, William Harvey Research Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, United Kingdom
| | - Pedro Cutillas
- Cell Signalling & Proteomics Group, Barts Cancer Institute, Queen Mary University of London, London, United Kingdom
| | - Thomas D. Nightingale
- Centre for Microvascular Research, William Harvey Research Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, United Kingdom
- * E-mail:
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136
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Gómez-Escudero J, Clemente C, García-Weber D, Acín-Pérez R, Millán J, Enríquez JA, Bentley K, Carmeliet P, Arroyo AG. PKM2 regulates endothelial cell junction dynamics and angiogenesis via ATP production. Sci Rep 2019; 9:15022. [PMID: 31636306 PMCID: PMC6803685 DOI: 10.1038/s41598-019-50866-x] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Accepted: 09/19/2019] [Indexed: 12/17/2022] Open
Abstract
Angiogenesis, the formation of new blood vessels from pre-existing ones, occurs in pathophysiological contexts such as wound healing, cancer, and chronic inflammatory disease. During sprouting angiogenesis, endothelial tip and stalk cells coordinately remodel their cell-cell junctions to allow collective migration and extension of the sprout while maintaining barrier integrity. All these processes require energy, and the predominant ATP generation route in endothelial cells is glycolysis. However, it remains unclear how ATP reaches the plasma membrane and intercellular junctions. In this study, we demonstrate that the glycolytic enzyme pyruvate kinase 2 (PKM2) is required for sprouting angiogenesis in vitro and in vivo through the regulation of endothelial cell-junction dynamics and collective migration. We show that PKM2-silencing decreases ATP required for proper VE-cadherin internalization/traffic at endothelial cell-cell junctions. Our study provides fresh insight into the role of ATP subcellular compartmentalization in endothelial cells during angiogenesis. Since manipulation of EC glycolysis constitutes a potential therapeutic intervention route, particularly in tumors and chronic inflammatory disease, these findings may help to refine the targeting of endothelial glycolytic activity in disease.
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Affiliation(s)
- Jesús Gómez-Escudero
- Vascular Pathophysiology, Centro Nacional de Investigaciones Cardiovasculares (CNIC). Melchor Fernández Almagro 3, 28029, Madrid, Spain
- Tumour Biology Department, Barts Cancer Institute, John´s Vane Centre, Queen Mary´s University of London. Charterhouse Sq, EC1M 6BQ, London, UK
| | - Cristina Clemente
- Vascular Pathophysiology, Centro Nacional de Investigaciones Cardiovasculares (CNIC). Melchor Fernández Almagro 3, 28029, Madrid, Spain
- Centro de Investigaciones Biológicas (CIB-CSIC). Ramiro de Maeztu 9, 28040, Madrid, Spain
| | - Diego García-Weber
- Centro de Biología Molecular Severo Ochoa, Consejo Superior de Investigaciones Científicas (CSIC), Universidad Autónoma de Madrid, 28049, Madrid, Spain
| | - Rebeca Acín-Pérez
- Myocardial Pathology Areas, Centro Nacional de Investigaciones Cardiovasculares (CNIC). Melchor Fernández Almagro 3, 28029, Madrid, Spain
| | - Jaime Millán
- Centro de Biología Molecular Severo Ochoa, Consejo Superior de Investigaciones Científicas (CSIC), Universidad Autónoma de Madrid, 28049, Madrid, Spain
| | - José A Enríquez
- Myocardial Pathology Areas, Centro Nacional de Investigaciones Cardiovasculares (CNIC). Melchor Fernández Almagro 3, 28029, Madrid, Spain
| | - Katie Bentley
- Computational Biology Laboratory, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
- Cellular Adaptive Behaviour Laboratory, Rudbeck Laboratories, Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | - Peter Carmeliet
- Laboratory of Angiogenesis and Vascular Metabolism, Center for Cancer Biology, Vlaams Instituut voor Biotechnologie (VIB), B-3000, Leuven, Belgium
- Laboratory of Angiogenesis and Vascular Metabolism, Center for Cancer Biology, Department of Oncology, University of Leuven, B-3000, Leuven, Belgium
- State Key Laboratory of Ophthalmology, Zhongsan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, China
| | - Alicia G Arroyo
- Vascular Pathophysiology, Centro Nacional de Investigaciones Cardiovasculares (CNIC). Melchor Fernández Almagro 3, 28029, Madrid, Spain.
- Centro de Investigaciones Biológicas (CIB-CSIC). Ramiro de Maeztu 9, 28040, Madrid, Spain.
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137
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Force and Collective Epithelial Activities. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019. [PMID: 31612452 DOI: 10.1007/978-3-030-17593-1_3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/27/2023]
Abstract
Cells apply forces to their surroundings to perform basic biological activities, including division, adhesion, and migration. Similarly, cell populations in epithelial tissues coordinate forces in physiological processes of morphogenesis and repair. These activities are highly regulated to yield the correct development and function of the body. The modification of this order is at the onset of pathological events and malfunctions. Mechanical forces and their translation into biological signals are the focus of an emerging field of research, shaping as a central discipline in the study of life and gathering knowledge at the interface of engineering, physics, biology and medicine. Novel engineering methods are needed to complement the classic instruments developed by molecular biology, physics and medicine. These should enable the measurement of forces at the cellular and multicellular level, and at a temporal and spatial resolution which is fully compatible with the ranges experienced by cells in vivo.
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138
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Kempe S, Fois G, Brunner C, Hoffmann TK, Hahn J, Greve J. Bradykinin signaling regulates solute permeability and cellular junction organization in lymphatic endothelial cells. Microcirculation 2019; 27:e12592. [PMID: 31550055 DOI: 10.1111/micc.12592] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2018] [Revised: 09/11/2019] [Accepted: 09/18/2019] [Indexed: 12/26/2022]
Abstract
OBJECTIVE Determine the effect of bradykinin on solute permeability and cellular junctional proteins in human dermis microvascular endothelial cells. METHODS Cells were characterized by immunofluorescence and fluorescence-activated cell sorting. Macromolecular transport of dextran and albumin was monitored. Junctional protein expression and phosphorylation were determined by immunoblot analyses. Intracellular calcium and cAMP levels were evaluated. Target gene expression at mRNA and protein levels was determined. RESULTS Human dermis microvascular endothelial cells comprised 97% lymphatic endothelial cells. Bradykinin increased the permeability to dextran in a concentration-dependent manner, while reduced the permeability to albumin. Bradykinin treatment down-regulated VE-cadherin expression and affected its phosphorylation status at Tyr731. It also down-regulated claudin-5 expression at the transcriptional level through bradykinin-2-receptor signaling. An increase in the intracellular calcium levels and a reduction in the cAMP concentration were associated effects. Finally, bradykinin induced the up-regulation of vascular endothelial growth factor-C protein which was found increased in BK-induced human dermis microvascular endothelial cells culture supernates. CONCLUSIONS Human dermis microvascular endothelial cells represent a model of lymphatic endothelial cells, in which bradykinin-2-receptor is expressed. Bradykinin-induced bradykinin-2-receptor signaling through intracellular calcium mobilization and reduction in cAMP levels, triggered changes in solute permeability and cellular junction expression. It further up-regulated vascular endothelial growth factors-C protein expression, which is a key modulator of lymphatic vessels function and lymphangiogenesis.
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Affiliation(s)
- Sybille Kempe
- Department of Oto-Rhino-Laryngology, Head and Neck Surgery, Ulm University Medical Center, Ulm, Germany
| | - Giorgio Fois
- Institute of General Physiology, Ulm University, Ulm, Germany
| | - Cornelia Brunner
- Department of Oto-Rhino-Laryngology, Head and Neck Surgery, Ulm University Medical Center, Ulm, Germany
| | - Thomas K Hoffmann
- Department of Oto-Rhino-Laryngology, Head and Neck Surgery, Ulm University Medical Center, Ulm, Germany
| | - Janina Hahn
- Department of Oto-Rhino-Laryngology, Head and Neck Surgery, Ulm University Medical Center, Ulm, Germany
| | - Jens Greve
- Department of Oto-Rhino-Laryngology, Head and Neck Surgery, Ulm University Medical Center, Ulm, Germany
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139
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Wettschureck N, Strilic B, Offermanns S. Passing the Vascular Barrier: Endothelial Signaling Processes Controlling Extravasation. Physiol Rev 2019; 99:1467-1525. [PMID: 31140373 DOI: 10.1152/physrev.00037.2018] [Citation(s) in RCA: 150] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
A central function of the vascular endothelium is to serve as a barrier between the blood and the surrounding tissue of the body. At the same time, solutes and cells have to pass the endothelium to leave or to enter the bloodstream to maintain homeostasis. Under pathological conditions, for example, inflammation, permeability for fluid and cells is largely increased in the affected area, thereby facilitating host defense. To appropriately function as a regulated permeability filter, the endothelium uses various mechanisms to allow solutes and cells to pass the endothelial layer. These include transcellular and paracellular pathways of which the latter requires remodeling of intercellular junctions for its regulation. This review provides an overview on endothelial barrier regulation and focuses on the endothelial signaling mechanisms controlling the opening and closing of paracellular pathways for solutes and cells such as leukocytes and metastasizing tumor cells.
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Affiliation(s)
- Nina Wettschureck
- Department of Pharmacology, Max Planck Institute for Heart and Lung Research , Bad Nauheim , Germany ; and Centre for Molecular Medicine, Medical Faculty, J.W. Goethe University Frankfurt , Frankfurt , Germany
| | - Boris Strilic
- Department of Pharmacology, Max Planck Institute for Heart and Lung Research , Bad Nauheim , Germany ; and Centre for Molecular Medicine, Medical Faculty, J.W. Goethe University Frankfurt , Frankfurt , Germany
| | - Stefan Offermanns
- Department of Pharmacology, Max Planck Institute for Heart and Lung Research , Bad Nauheim , Germany ; and Centre for Molecular Medicine, Medical Faculty, J.W. Goethe University Frankfurt , Frankfurt , Germany
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140
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Majolée J, Kovačević I, Hordijk PL. Ubiquitin-based modifications in endothelial cell-cell contact and inflammation. J Cell Sci 2019; 132:132/17/jcs227728. [PMID: 31488505 DOI: 10.1242/jcs.227728] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Endothelial cell-cell contacts are essential for vascular integrity and physiology, protecting tissues and organs from edema and uncontrolled invasion of inflammatory cells. The vascular endothelial barrier is dynamic, but its integrity is preserved through a tight control at different levels. Inflammatory cytokines and G-protein-coupled receptor agonists, such as histamine, reduce endothelial integrity and increase vascular leakage. This is due to elevated myosin-based contractility, in conjunction with phosphorylation of proteins at cell-cell contacts. Conversely, reducing contractility stabilizes or even increases endothelial junctional integrity. Rho GTPases are key regulators of such cytoskeletal dynamics and endothelial cell-cell contacts. In addition to signaling-induced regulation, the expression of junctional proteins, such as occludin, claudins and vascular endothelial cadherin, also controls endothelial barrier function. There is increasing evidence that, in addition to protein phosphorylation, ubiquitylation (also known as ubiquitination) is an important and dynamic post-translational modification that regulates Rho GTPases, junctional proteins and, consequently, endothelial barrier function. In this Review, we discuss the emerging role of ubiquitylation and deubiquitylation events in endothelial integrity and inflammation. The picture that emerges is one of increasing complexity, which is both fascinating and promising given the clinical relevance of vascular integrity in the control of inflammation, and of tissue and organ damage.
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Affiliation(s)
- Jisca Majolée
- Department of Physiology, Amsterdam University Medical Centers, location VUmc, De Boelelaan 1108, 1081 HZ Amsterdam, The Netherlands
| | - Igor Kovačević
- Department of Physiology, Amsterdam University Medical Centers, location VUmc, De Boelelaan 1108, 1081 HZ Amsterdam, The Netherlands
| | - Peter L Hordijk
- Department of Physiology, Amsterdam University Medical Centers, location VUmc, De Boelelaan 1108, 1081 HZ Amsterdam, The Netherlands
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141
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Niño CA, Sala S, Polo S. When ubiquitin meets E-cadherin: Plasticity of the epithelial cellular barrier. Semin Cell Dev Biol 2019; 93:136-144. [DOI: 10.1016/j.semcdb.2018.12.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Revised: 11/28/2018] [Accepted: 12/13/2018] [Indexed: 12/22/2022]
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142
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Bernardi L, Giampietro C, Marina V, Genta M, Mazza E, Ferrari A. Adaptive reorientation of endothelial collectives in response to strain. Integr Biol (Camb) 2019; 10:527-538. [PMID: 30112523 DOI: 10.1039/c8ib00092a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Mature epithelial monolayers share the ability to coherently respond to external mechanical stimuli. Tissue remodeling requires cell shape changes and coordinated movements. Human endothelia provide an exquisite example of such emerging collective activities. As part of their function in maintaining body homeostasis under variable hemodynamic loadings, endothelial ensembles must dynamically adapt to wall shear stress and cyclic deformation. While the alignment of several types of cells, including fibroblasts, osteoblasts and epithelial tissues, in response to various flow conditions or wall shear stress levels has been described in detail, less is known about collective endothelial remodeling under pure wall deformation. Here, using a custom-developed bioreactor, we exposed mature human endothelia to two distinct physiological levels of cyclic loading, generating overlapping gradients of strain. Endothelial cells remodeled depending on the level of imposed strain yielding local variations of cell density. In particular, a collective cell orientation orthogonal to the main direction of strain was observed at low levels of wall deformation, while cells reoriented parallel to the main direction of strain at high levels of wall deformation. The tissue adaptation depended on the establishment of mature adherens junctions, which were reinforced by the polarized recruitment of the adaptor protein vinculin. The pivotal role of cell-to-cell junctions was confirmed by the biochemical inhibition of vascular endothelial cadherin homotypic contacts, which impaired the collective remodeling. Together, our data establish wall deformation as an independent determinant of endothelial architecture with direct implications in vascular physiopathology.
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Affiliation(s)
- Laura Bernardi
- ETH Zurich, Institute for Mechanical Systems, 8092 Zürich, Switzerland.
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de Jesus Souza M, de Moraes JA, Da Silva VN, Helal-Neto E, Uberti AF, Scopel-Guerra A, Olivera-Severo D, Carlini CR, Barja-Fidalgo C. Helicobacter pylori urease induces pro-inflammatory effects and differentiation of human endothelial cells: Cellular and molecular mechanism. Helicobacter 2019; 24:e12573. [PMID: 30907046 DOI: 10.1111/hel.12573] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Revised: 01/21/2019] [Accepted: 01/30/2019] [Indexed: 12/26/2022]
Abstract
BACKGROUND Helicobacter pylori urease (HPU) is a key virulence factor that enables bacteria to colonize and survive in the stomach. We early demonstrated that HPU, independent of its catalytic activity, induced inflammatory and angiogenic responses in vivo and directly activated human neutrophils to produce reactive oxygen species (ROS). We have investigated the effects of HPU on endothelial cells, focusing on the signaling mechanism involved. METHODS Monolayers of human microvascular endothelial cells (HMEC-1) were stimulated with HPU (up to 10 nmol/L): Paracellular permeability was accessed through dextran-FITC passage. NO and ROS production was evaluated using intracellular probes. Proteins or mRNA expressions were detected by Western blotting and fluorescence microscopy or qPCR assays, respectively. RESULTS Treatment with HPU enhanced paracellular permeability of HMEC-1, preceded by VE-cadherin phosphorylation and its dissociation from cell-cell junctions. This caused profound alterations in actin cytoskeleton dynamics and focal adhesion kinase (FAK) phosphorylation. HPU triggered ROS and nitric oxide (NO) production by endothelial cells. Increased intracellular ROS resulted in nuclear factor kappa B (NF-κB) activation and upregulated expression of cyclooxygenase-2 (COX-2), hemeoxygenase-1 (HO-1), interleukin-1β (IL-1β), and intercellular adhesion molecule-1 (ICAM-1). Higher ICAM-1 and E-selectin expression was associated with increased neutrophil adhesion on HPU-stimulated HMEC monolayers. The effects of HPU on endothelial cells were dependent on ROS production and lipoxygenase pathway activation, being inhibited by esculetin. Additionally, HPU improved vascular endothelial growth factor receptor 2 (VEGFR-2) expression. CONCLUSION The data suggest that the pro-inflammatory properties of HPU drive endothelial cell to a ROS-dependent program of differentiation that contributes to the progression of H pylori infection.
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Affiliation(s)
- Mariele de Jesus Souza
- Laboratory of Cellular and Molecular Pharmacology, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - João Alfredo de Moraes
- Laboratory of Cellular and Molecular Pharmacology, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil.,Laboratory of Redox Biology, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Vany Nascimento Da Silva
- Laboratory of Cellular and Molecular Pharmacology, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Edward Helal-Neto
- Laboratory of Cellular and Molecular Pharmacology, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Augusto Frantz Uberti
- Laboratory of Neurotoxins, Brain Institute (BRAINS-InsCer), Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, Brazil
| | - Adriele Scopel-Guerra
- Center of Biotechnology, Universidade Federal Rio Grande do Sul, Porto Alegre, Brazil
| | - Deiber Olivera-Severo
- Center of Biotechnology, Universidade Federal Rio Grande do Sul, Porto Alegre, Brazil
| | - Célia R Carlini
- Laboratory of Neurotoxins, Brain Institute (BRAINS-InsCer), Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, Brazil.,Center of Biotechnology, Universidade Federal Rio Grande do Sul, Porto Alegre, Brazil
| | - Christina Barja-Fidalgo
- Laboratory of Cellular and Molecular Pharmacology, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
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144
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Klomp JE, Shaaya M, Matsche J, Rebiai R, Aaron JS, Collins KB, Huyot V, Gonzalez AM, Muller WA, Chew TL, Malik AB, Karginov AV. Time-Variant SRC Kinase Activation Determines Endothelial Permeability Response. Cell Chem Biol 2019; 26:1081-1094.e6. [PMID: 31130521 DOI: 10.1016/j.chembiol.2019.04.007] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Revised: 03/25/2019] [Accepted: 04/05/2019] [Indexed: 12/31/2022]
Abstract
In the current model of endothelial barrier regulation, the tyrosine kinase SRC is purported to induce disassembly of endothelial adherens junctions (AJs) via phosphorylation of VE cadherin, and thereby increase junctional permeability. Here, using a chemical biology approach to temporally control SRC activation, we show that SRC exerts distinct time-variant effects on the endothelial barrier. We discovered that the immediate effect of SRC activation was to transiently enhance endothelial barrier function as the result of accumulation of VE cadherin at AJs and formation of morphologically distinct reticular AJs. Endothelial barrier enhancement via SRC required phosphorylation of VE cadherin at Y731. In contrast, prolonged SRC activation induced VE cadherin phosphorylation at Y685, resulting in increased endothelial permeability. Thus, time-variant SRC activation differentially phosphorylates VE cadherin and shapes AJs to fine-tune endothelial barrier function. Our work demonstrates important advantages of synthetic biology tools in dissecting complex signaling systems.
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Affiliation(s)
- Jennifer E Klomp
- Department of Pharmacology, The University of Illinois College of Medicine, 835 S. Wolcott Avenue, Chicago, IL 60612, USA
| | - Mark Shaaya
- Department of Pharmacology, The University of Illinois College of Medicine, 835 S. Wolcott Avenue, Chicago, IL 60612, USA
| | - Jacob Matsche
- Department of Pharmacology, The University of Illinois College of Medicine, 835 S. Wolcott Avenue, Chicago, IL 60612, USA
| | - Rima Rebiai
- Department of Pharmacology, The University of Illinois College of Medicine, 835 S. Wolcott Avenue, Chicago, IL 60612, USA
| | - Jesse S Aaron
- Advanced Imaging Center at Janelia Research Campus, 19700 Helix Drive, Ashburn, VA 20147, USA
| | - Kerrie B Collins
- Department of Pharmacology, The University of Illinois College of Medicine, 835 S. Wolcott Avenue, Chicago, IL 60612, USA
| | - Vincent Huyot
- Department of Pharmacology, The University of Illinois College of Medicine, 835 S. Wolcott Avenue, Chicago, IL 60612, USA
| | - Annette M Gonzalez
- Department of Pathology, The Feinberg School of Medicine at Northwestern University, Chicago, IL 60611, USA
| | - William A Muller
- Department of Pathology, The Feinberg School of Medicine at Northwestern University, Chicago, IL 60611, USA
| | - Teng-Leong Chew
- Advanced Imaging Center at Janelia Research Campus, 19700 Helix Drive, Ashburn, VA 20147, USA
| | - Asrar B Malik
- Department of Pharmacology, The University of Illinois College of Medicine, 835 S. Wolcott Avenue, Chicago, IL 60612, USA
| | - Andrei V Karginov
- Department of Pharmacology, The University of Illinois College of Medicine, 835 S. Wolcott Avenue, Chicago, IL 60612, USA.
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145
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Kriesi C, Steinert M, Marmaras A, Danzer C, Meskenaite V, Kurtcuoglu V. Integrated Flow Chamber System for Live Cell Microscopy. Front Bioeng Biotechnol 2019; 7:91. [PMID: 31119129 PMCID: PMC6504681 DOI: 10.3389/fbioe.2019.00091] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Accepted: 04/12/2019] [Indexed: 11/13/2022] Open
Abstract
In vitro quantification of the effect of mechanical loads on cells by live microscopy requires precise control of load and culture environment. Corresponding systems are often bulky, their setup and maintenance are time consuming, or the cell yield is low. Here, we show the design and initial testing of a new cell culture system that fits on standard light microscope stages. Based on the parallel plate principle, the system allows for live microscopy of cells exposed to flow-induced shear stress, features short setup time and requires little user interaction. An integrated feedback-controlled heater and a bubble trap enable long observation times. The key design feature is the possibility for quick exchange of the cultured cells. We present first test results that focus on verifying the robustness, biocompatibility, and ease of use of the device.
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Affiliation(s)
- Carlo Kriesi
- TrollLABS, Department of Mechanical and Industrial Engineering, Norwegian University of Science and Technology, Trondheim, Norway
| | - Martin Steinert
- TrollLABS, Department of Mechanical and Industrial Engineering, Norwegian University of Science and Technology, Trondheim, Norway
| | - Anastasios Marmaras
- The Interface Group, Institute of Physiology, University of Zurich, Zurich, Switzerland
| | - Claudia Danzer
- The Interface Group, Institute of Physiology, University of Zurich, Zurich, Switzerland
| | - Virginia Meskenaite
- The Interface Group, Institute of Physiology, University of Zurich, Zurich, Switzerland
| | - Vartan Kurtcuoglu
- The Interface Group, Institute of Physiology, University of Zurich, Zurich, Switzerland
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146
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Wu MA, Tsvirkun D, Bureau L, Boccon-Gibod I, Inglebert M, Duperray A, Bouillet L, Misbah C, Cicardi M. Paroxysmal Permeability Disorders: Development of a Microfluidic Device to Assess Endothelial Barrier Function. Front Med (Lausanne) 2019; 6:89. [PMID: 31069229 PMCID: PMC6491734 DOI: 10.3389/fmed.2019.00089] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Accepted: 04/09/2019] [Indexed: 11/28/2022] Open
Abstract
Background: Paroxysmal Permeability Disorders (PPDs) are pathological conditions caused by periodic short lasting increase of endothelial permeability, in the absence of inflammatory, degenerative, ischemic vascular injury. PPDs include primary angioedema, idiopathic systemic capillary leak syndrome and some rare forms of localized retroperitoneal-mediastinal edema. Aim: to validate a microfluidic device to study endothelial permeability in flow conditions. Materials and Methods: we designed a microchannel network (the smallest channel is 30μm square section). Human Umbilical Vein Endothelial Cells (HUVECs) were cultured under constant shear stress in the networks. Endothelial permeability assessment was based on interaction of biotinylated fibronectin used as a matrix for HUVECs and FITC-conjugated avidin. The increase in endothelial permeability was identified as changes in fluorescence intensity detected by confocal fluorescent microscopy. Results: The microchannels were constantly perfused with a steady flow of culture medium, ensuring a physiologically relevant level of shear stress at the wall of ~0.2 Pa. Our preliminary results demonstrated that circulation of culture medium or plasma from healthy volunteers was associated with low fluorescence of fibronectin matrix. When bradykinin diluted in culture medium was perfused, an increase in average fluorescence was detected. Conclusion: Our microvasculature model is suitable to study endothelial functions in physiological flow conditions and in the presence of factors like bradykinin known as mediator of several PPDs. Therefore, it can be a promising tool to better understand the mechanisms underlying disorders of endothelial permeability.
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Affiliation(s)
- Maddalena Alessandra Wu
- Department of Biomedical and Clinical Sciences, ASST Fatebenefratelli Sacco, Luigi Sacco Hospital, University of Milan, Milan, Italy
| | - Daria Tsvirkun
- Univ. Grenoble Alpes, LIPHY, Grenoble, France.,CNRS, LIPHY, Grenoble, France.,Belozersky Institute of Physico-chemical Biology, Lomonosov Moscow State University, Moscow, Russia
| | - Lionel Bureau
- Univ. Grenoble Alpes, LIPHY, Grenoble, France.,CNRS, LIPHY, Grenoble, France
| | - Isabelle Boccon-Gibod
- Department of Internal Medicine, Centre Hospitalier Universitaire de Grenoble, Grenoble, France
| | | | - Alain Duperray
- Univ. Grenoble Alpes, IAB, Grenoble, France.,INSERM, IAB, Grenoble, France
| | - Laurence Bouillet
- Department of Internal Medicine, Centre Hospitalier Universitaire de Grenoble, Grenoble, France
| | - Chaouqi Misbah
- Univ. Grenoble Alpes, LIPHY, Grenoble, France.,CNRS, LIPHY, Grenoble, France
| | - Marco Cicardi
- IRCCS-Istituti Clinici Scientifici Maugeri, University of Milan, Milan, Italy
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147
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Juettner VV, Kruse K, Dan A, Vu VH, Khan Y, Le J, Leckband D, Komarova Y, Malik AB. VE-PTP stabilizes VE-cadherin junctions and the endothelial barrier via a phosphatase-independent mechanism. J Cell Biol 2019; 218:1725-1742. [PMID: 30948425 PMCID: PMC6504901 DOI: 10.1083/jcb.201807210] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Revised: 12/20/2018] [Accepted: 03/12/2019] [Indexed: 12/16/2022] Open
Abstract
Juettner et al. describe a novel phosphatase-activity–independent mechanism by which the phosphatase VE-PTP restricts endothelial permeability. VE-PTP functions as a scaffold that binds and inhibits the RhoGEF GEF-H1, limiting RhoA-dependent tension across VE-cadherin junctions and decreasing VE-cadherin internalization to stabilize adherens junctions and reduce endothelial permeability. Vascular endothelial (VE) protein tyrosine phosphatase (PTP) is an endothelial-specific phosphatase that stabilizes VE-cadherin junctions. Although studies have focused on the role of VE-PTP in dephosphorylating VE-cadherin in the activated endothelium, little is known of VE-PTP’s role in the quiescent endothelial monolayer. Here, we used the photoconvertible fluorescent protein VE-cadherin-Dendra2 to monitor VE-cadherin dynamics at adherens junctions (AJs) in confluent endothelial monolayers. We discovered that VE-PTP stabilizes VE-cadherin junctions by reducing the rate of VE-cadherin internalization independently of its phosphatase activity. VE-PTP serves as an adaptor protein that through binding and inhibiting the RhoGEF GEF-H1 modulates RhoA activity and tension across VE-cadherin junctions. Overexpression of the VE-PTP cytosolic domain mutant interacting with GEF-H1 in VE-PTP–depleted endothelial cells reduced GEF-H1 activity and restored VE-cadherin dynamics at AJs. Thus, VE-PTP stabilizes VE-cadherin junctions and restricts endothelial permeability by inhibiting GEF-H1, thereby limiting RhoA signaling at AJs and reducing the VE-cadherin internalization rate.
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Affiliation(s)
- Vanessa V Juettner
- Department of Pharmacology and the Center for Lung and Vascular Biology, The University of Illinois College of Medicine, Chicago, IL
| | - Kevin Kruse
- Department of Pharmacology and the Center for Lung and Vascular Biology, The University of Illinois College of Medicine, Chicago, IL
| | - Arkaprava Dan
- Department of Chemical and Biomolecular Engineering, University of Illinois College of Engineering at Urbana-Champaign, Urbana, IL
| | - Vinh H Vu
- Department of Chemical and Biomolecular Engineering, University of Illinois College of Engineering at Urbana-Champaign, Urbana, IL
| | - Yousaf Khan
- Department of Pharmacology and the Center for Lung and Vascular Biology, The University of Illinois College of Medicine, Chicago, IL
| | - Jonathan Le
- Department of Pharmacology and the Center for Lung and Vascular Biology, The University of Illinois College of Medicine, Chicago, IL
| | - Deborah Leckband
- Department of Chemical and Biomolecular Engineering, University of Illinois College of Engineering at Urbana-Champaign, Urbana, IL
| | - Yulia Komarova
- Department of Pharmacology and the Center for Lung and Vascular Biology, The University of Illinois College of Medicine, Chicago, IL
| | - Asrar B Malik
- Department of Pharmacology and the Center for Lung and Vascular Biology, The University of Illinois College of Medicine, Chicago, IL
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148
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Curry FE, Taxt T, Rygh CB, Pavlin T, Bjørnstad R, Døskeland SO, Reed RK. Epac1 -/- mice have elevated baseline permeability and do not respond to histamine as measured with dynamic contrast-enhanced magnetic resonance imaging with contrast agents of different molecular weights. Acta Physiol (Oxf) 2019; 225:e13199. [PMID: 30300965 PMCID: PMC6646910 DOI: 10.1111/apha.13199] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2018] [Revised: 09/29/2018] [Accepted: 10/04/2018] [Indexed: 12/13/2022]
Abstract
Aim Epac1−/− mice, but not Epac2−/− mice have elevated baseline permeability to albumin. This study extends the investigations of how Epac‐dependent pathways modulate transvascular exchange in response to the classical inflammatory agent histamine. It also evaluates the limitations of models of blood‐to‐tissue exchange in transgenic mice in DCE‐MRI measurements. Methods We measured DCE‐MRI signal intensity in masseter muscle of wt and Epac1−/− mice with established approaches from capillary physiology to determine how changes in blood flow and vascular permeability contribute to overall changes of microvascular flux. We used two tracers, the high molecular weight tracer (Gadomer‐17, MW 17 kDa, apparent MW 30‐35 kDa) is expected to be primarily limited by diffusion and therefore less dependent on changes in blood flow and the low molecular weight tracer (Dotarem (MW 0.56 kDa) whose transvascular exchange is determined by both blood flow and permeability. Paired experiments in each animal combined with analytical methods provided an internally consistent description of microvascular transport. Results Epac1−/− mice had elevated baseline permeability relative to wt control mice for Dotarem and Gadomer‐17. In contrast to wt mice, Epac1−/− mice failed to increase transvascular permeability in response to histamine. Dotarem underestimated blood flow and vascular volume and Gadomer‐17 has limited sensitivity in extravascular accumulation. Conclusion The study suggests that the normal barrier loosening effect of histamine in venular microvessels do not function when the normal barrier tightening effect of Epac1 is already compromised. The study also demonstrated that the numerical analysis of DCE‐MRI data with tracers of different molecular weight has significant limitations.
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Affiliation(s)
- Fitz‐Roy E. Curry
- Department of Physiology and Membrane Biology University of California Davis Davis California
| | - Torfinn Taxt
- Department of Biomedicine University of Bergen Bergen Norway
| | - Cecilie Brekke Rygh
- Department of Biomedicine University of Bergen Bergen Norway
- Molecular Imaging Centre Department of Biomedicine University of Bergen Bergen Norway
| | - Tina Pavlin
- Department of Biomedicine University of Bergen Bergen Norway
- Molecular Imaging Centre Department of Biomedicine University of Bergen Bergen Norway
| | - Ronja Bjørnstad
- Department of Biomedicine University of Bergen Bergen Norway
| | | | - Rolf K. Reed
- Department of Biomedicine University of Bergen Bergen Norway
- Centre for Cancer Biomarkers University of Bergen Bergen Norway
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149
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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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150
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Usuba R, Pauty J, Soncin F, Matsunaga YT. EGFL7 regulates sprouting angiogenesis and endothelial integrity in a human blood vessel model. Biomaterials 2019; 197:305-316. [PMID: 30684886 DOI: 10.1016/j.biomaterials.2019.01.022] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Revised: 12/28/2018] [Accepted: 01/12/2019] [Indexed: 12/17/2022]
Abstract
Elucidating the mechanisms underlying sprouting angiogenesis and permeability should enable the development of more effective therapies for various diseases, including retinopathy, cancer, and other vascular disorders. We focused on epidermal growth factor-like domain 7 (EGFL7) which plays an important role in NOTCH signaling and in the organization of angiogenic sprouts. We developed an EGFL7-knockdown in vitro microvessel model and investigated the effect of EGFL7 at a tissue level. We found EGFL7 knockdown suppressed VEGF-A-induced sprouting angiogenesis accompanied by an overproduction of endothelial filopodia and reduced collagen IV deposition at the basal side of endothelial cells. We also observed impaired barrier function which reflected an inflammatory condition. Furthermore, our results showed that proper formation of adherens junctions and phosphorylation of VE-cadherin was disturbed. In conclusion, by using a 3D microvessel model we identified novel roles for EGFL7 in endothelial function during sprouting angiogenesis.
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Affiliation(s)
- Ryo Usuba
- Center for International Research on Integrative Biomedical Systems (CIBiS), Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan
| | - Joris Pauty
- Center for International Research on Integrative Biomedical Systems (CIBiS), Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan; LIMMS/CNRS-IIS (UMI 2820), Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan
| | - Fabrice Soncin
- LIMMS/CNRS-IIS (UMI 2820), Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan; CNRS/IIS/COL/Lille University SMMiL-E Project, CNRS Délégation Nord-Pas de Calais et Picardie, 2 rue de Canonniers, Lille, Cedex 59046, France; Université de Lille, CNRS, Institut Pasteur de Lille, UMR 8161 - M3T, F-59000 Lille, France.
| | - Yukiko T Matsunaga
- Center for International Research on Integrative Biomedical Systems (CIBiS), Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan; LIMMS/CNRS-IIS (UMI 2820), Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan; CNRS/IIS/COL/Lille University SMMiL-E Project, CNRS Délégation Nord-Pas de Calais et Picardie, 2 rue de Canonniers, Lille, Cedex 59046, France.
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