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Lithgow KV, Tsao E, Schovanek E, Gomez A, Swayne LA, Cameron CE. Treponema pallidum Disrupts VE-Cadherin Intercellular Junctions and Traverses Endothelial Barriers Using a Cholesterol-Dependent Mechanism. Front Microbiol 2021; 12:691731. [PMID: 34354688 PMCID: PMC8329343 DOI: 10.3389/fmicb.2021.691731] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Accepted: 06/08/2021] [Indexed: 11/13/2022] Open
Abstract
Treponema pallidum subspecies pallidum, the causative agent of syphilis, traverses the vascular endothelium to gain access to underlying tissue sites. Herein, we investigate the mechanisms associated with T. pallidum traversal of endothelial barriers. Immunofluorescence microscopy reveals that a subpopulation of T. pallidum localizes to intercellular junctions and that viable T. pallidum, as well as a T. pallidum vascular adhesin (Tp0751), disrupts the architecture of the main endothelial junctional protein VE-cadherin. Intriguingly, in this study we show that T. pallidum traverses endothelial barriers with no disruption in barrier permeability. Furthermore, barrier traversal by T. pallidum is reduced by pretreatment of endothelial cells with filipin, an inhibitor that blocks cholesterol-mediated endocytosis. Collectively, these results suggest that T. pallidum can use a cholesterol-dependent, lipid raft-mediated endocytosis mechanism to traverse endothelial barriers. Further, treponemal localization to, and disruption of, intercellular junctions suggests that a paracellular route may also be utilized, a dual traversal strategy that has also been observed to occur for leukocytes and other invasive bacteria.
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Affiliation(s)
- Karen V Lithgow
- Department of Biochemistry and Microbiology, University of Victoria, Victoria, BC, Canada
| | - Emily Tsao
- Department of Biochemistry and Microbiology, University of Victoria, Victoria, BC, Canada
| | - Ethan Schovanek
- Department of Biochemistry and Microbiology, University of Victoria, Victoria, BC, Canada
| | - Alloysius Gomez
- Department of Biochemistry and Microbiology, University of Victoria, Victoria, BC, Canada
| | - Leigh Anne Swayne
- Division of Medical Sciences, University of Victoria, Victoria, BC, Canada
| | - Caroline E Cameron
- Department of Biochemistry and Microbiology, University of Victoria, Victoria, BC, Canada.,Department of Medicine, Division of Allergy and Infectious Diseases, University of Washington, Seattle, WA, United States
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52
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Liu J, Liao X, Zhou J, Li B, Xu L, Liu S, Li Y, Yuan D, Hu C, Jiang W, Yan J. A Rare Variant of ANK3 Is Associated With Intracranial Aneurysm. Front Neurol 2021; 12:672570. [PMID: 34248821 PMCID: PMC8267376 DOI: 10.3389/fneur.2021.672570] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Accepted: 06/01/2021] [Indexed: 12/04/2022] Open
Abstract
Intracranial aneurysm (IA) is a cerebrovascular disorder in which abnormal dilation of a blood vessel results from weakening of the blood vessel wall. The aneurysm may rupture, leading to subarachnoid hemorrhage with severe outcomes. This study was conducted to identify the genetic factors involved in the etiology of IA. Whole-exome sequencing was performed in three IA-aggregate families to identify candidate variants. Further association studies of candidate variants were performed among sporadic cases and controls. Bioinformatic analysis was used to predict the functions of candidate genes and variants. Twenty variants were identified after whole-exome sequencing, among which eight were selected for replicative association studies. ANK3 c.4403G>A (p.R1468H) was significantly associated with IA (odds ratio 4.77; 95% confidence interval 1.94–11.67; p-value = 0.00019). Amino acid R1468 in ANK3 was predicted to be located in the spectrin-binding domain of ankyrin-G and may regulate the migration of vascular endothelial cells and affect cell–cell junctions. Therefore, the variation p.R1468H may cause weakening of the artery walls, thereby accelerating the formation of IA. Thus, ANK3 is a candidate gene highly related to IA.
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Affiliation(s)
- Junyu Liu
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, China
| | - Xin Liao
- Department of Epidemiology and Health Statistics, Xiangya School of Public Health, Central South University, Changsha, China.,The People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, China
| | - Jilin Zhou
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, China
| | - Bingyang Li
- Department of Epidemiology and Health Statistics, Xiangya School of Public Health, Central South University, Changsha, China
| | - Lu Xu
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, China
| | - Songlin Liu
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, China
| | - Yifeng Li
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, China
| | - Dun Yuan
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, China
| | - Chongyu Hu
- Department of Neurology, Hunan People's Hospital, Changsha, China
| | - Weixi Jiang
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, China
| | - Junxia Yan
- Department of Epidemiology and Health Statistics, Xiangya School of Public Health, Central South University, Changsha, China.,Hunan Provincial Key Laboratory of Clinical Epidemiology, Xiangya School of Public Health, Central South University, Changsha, China
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53
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Phng LK, Belting HG. Endothelial cell mechanics and blood flow forces in vascular morphogenesis. Semin Cell Dev Biol 2021; 120:32-43. [PMID: 34154883 DOI: 10.1016/j.semcdb.2021.06.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 06/10/2021] [Accepted: 06/10/2021] [Indexed: 12/21/2022]
Abstract
The vertebrate cardiovascular system is made up by a hierarchically structured network of highly specialised blood vessels. This network emerges during early embryogenesis and evolves in size and complexity concomitant with embryonic growth and organ formation. Underlying this plasticity are actin-driven endothelial cell behaviours, which allow endothelial cells to change their shape and move within the vascular network. In this review, we discuss the cellular and molecular mechanisms involved in vascular network formation and how these intrinsic mechanisms are influenced by haemodynamic forces provided by pressurized blood flow. While most of this review focusses on in vivo evidence from zebrafish embryos, we also mention complementary findings obtained in other experimental systems.
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Affiliation(s)
- Li-Kun Phng
- Laboratory for Vascular Morphogenesis, RIKEN Center for Biosystems Dynamics Research, Kobe 650-0047, Japan.
| | - Heinz-Georg Belting
- Department of Cell Biology, Biozentrum, University of Basel, Basel 4056, Switzerland.
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Adelson RP, Palikuqi B, Weiss Z, Checco A, Schreiner R, Rafii S, Rabbany SY. Morphological characterization of Etv2 vascular explants using fractal analysis and atomic force microscopy. Microvasc Res 2021; 138:104205. [PMID: 34146583 DOI: 10.1016/j.mvr.2021.104205] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 05/28/2021] [Accepted: 06/07/2021] [Indexed: 11/25/2022]
Abstract
The rapid engraftment of vascular networks is critical for functional incorporation of tissue explants. However, existing methods for inducing angiogenesis utilize approaches that yield vasculature with poor temporal stability or inadequate mechanical integrity, which reduce their robustness in vivo. The transcription factor Ets variant 2 (Etv2) specifies embryonic hematopoietic and vascular endothelial cell (EC) development, and is transiently reactivated during postnatal vascular regeneration and tumor angiogenesis. This study investigates the role for Etv2 upregulation in forming stable vascular beds both in vitro and in vivo. Control and Etv2+ prototypical fetal-derived human umbilical vein ECs (HUVECs) and adult ECs were angiogenically grown into vascular beds. These vessel beds were characterized using fractal dimension and lacunarity, to quantify their branching complexity and space-filling homogeneity, respectively. Atomic force microscopy (AFM) was used to explore whether greater complexity and homogeneity lead to more mechanically stable vessels. Additionally, markers of EC integrity were used to probe for mechanistic clues. Etv2+ HUVECs exhibit greater branching, vessel density, and structural homogeneity, and decreased stiffness in vitro and in vivo, indicating a greater propensity for stable vessel formation. When co-cultured with colon tumor organoid tissue, Etv2+ HUVECs had decreased fractal dimension and lacunarity compared to Etv2+ HUVECs cultured alone, indicating that vessel density and homogeneity of vessel spacing increased due to the presence of Etv2. This study sets forth the novel concept that fractal dimension, lacunarity, and AFM are as informative as conventional angiogenic measurements, including vessel branching and density, to assess vascular perfusion and stability.
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Affiliation(s)
- Robert P Adelson
- Bioengineering Program, DeMatteis School of Engineering and Applied Science, Hofstra University, Hempstead, NY, USA
| | - Brisa Palikuqi
- Division of Regenerative Medicine, Ansary Stem Cell Institute, Department of Medicine, Weill Cornell Medicine, New York, NY, USA
| | - Zachary Weiss
- Bioengineering Program, DeMatteis School of Engineering and Applied Science, Hofstra University, Hempstead, NY, USA
| | - Antonio Checco
- Bioengineering Program, DeMatteis School of Engineering and Applied Science, Hofstra University, Hempstead, NY, USA
| | - Ryan Schreiner
- Department of Ophthalmology, Margaret Dyson Vision Research Institute, Weill Cornell Medicine, New York, NY, USA
| | - Shahin Rafii
- Division of Regenerative Medicine, Ansary Stem Cell Institute, Department of Medicine, Weill Cornell Medicine, New York, NY, USA
| | - Sina Y Rabbany
- Bioengineering Program, DeMatteis School of Engineering and Applied Science, Hofstra University, Hempstead, NY, USA; Division of Regenerative Medicine, Ansary Stem Cell Institute, Department of Medicine, Weill Cornell Medicine, New York, NY, USA.
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55
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Lasp1 regulates adherens junction dynamics and fibroblast transformation in destructive arthritis. Nat Commun 2021; 12:3624. [PMID: 34131132 PMCID: PMC8206096 DOI: 10.1038/s41467-021-23706-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2018] [Accepted: 05/11/2021] [Indexed: 02/05/2023] Open
Abstract
The LIM and SH3 domain protein 1 (Lasp1) was originally cloned from metastatic breast cancer and characterised as an adaptor molecule associated with tumourigenesis and cancer cell invasion. However, the regulation of Lasp1 and its function in the aggressive transformation of cells is unclear. Here we use integrative epigenomic profiling of invasive fibroblast-like synoviocytes (FLS) from patients with rheumatoid arthritis (RA) and from mouse models of the disease, to identify Lasp1 as an epigenomically co-modified region in chronic inflammatory arthritis and a functionally important binding partner of the Cadherin-11/β-Catenin complex in zipper-like cell-to-cell contacts. In vitro, loss or blocking of Lasp1 alters pathological tissue formation, migratory behaviour and platelet-derived growth factor response of arthritic FLS. In arthritic human TNF transgenic mice, deletion of Lasp1 reduces arthritic joint destruction. Therefore, we show a function of Lasp1 in cellular junction formation and inflammatory tissue remodelling and identify Lasp1 as a potential target for treating inflammatory joint disorders associated with aggressive cellular transformation.
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A junctional PACSIN2/EHD4/MICAL-L1 complex coordinates VE-cadherin trafficking for endothelial migration and angiogenesis. Nat Commun 2021; 12:2610. [PMID: 33972531 PMCID: PMC8110786 DOI: 10.1038/s41467-021-22873-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Accepted: 03/31/2021] [Indexed: 11/24/2022] Open
Abstract
Angiogenic sprouting relies on collective migration and coordinated rearrangements of endothelial leader and follower cells. VE-cadherin-based adherens junctions have emerged as key cell-cell contacts that transmit forces between cells and trigger signals during collective cell migration in angiogenesis. However, the underlying molecular mechanisms that govern these processes and their functional importance for vascular development still remain unknown. We previously showed that the F-BAR protein PACSIN2 is recruited to tensile asymmetric adherens junctions between leader and follower cells. Here we report that PACSIN2 mediates the formation of endothelial sprouts during angiogenesis by coordinating collective migration. We show that PACSIN2 recruits the trafficking regulators EHD4 and MICAL-L1 to the rear end of asymmetric adherens junctions to form a recycling endosome-like tubular structure. The junctional PACSIN2/EHD4/MICAL-L1 complex controls local VE-cadherin trafficking and thereby coordinates polarized endothelial migration and angiogenesis. Our findings reveal a molecular event at force-dependent asymmetric adherens junctions that occurs during the tug-of-war between endothelial leader and follower cells, and allows for junction-based guidance during collective migration in angiogenesis. Communication between endothelial leader and follower cells during collective cell migration is crucial for vascular development. Here, the authors show that PACSIN2 guides collective cell migration and angiogenesis by recruiting a protein trafficking complex to asymmetric cell-cell junctions, controlling local junction plasticity.
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De Rossi G, Vähätupa M, Cristante E, Arokiasamy S, Liyanage SE, May U, Pellinen L, Uusitalo-Järvinen H, Bainbridge JW, Järvinen TA, Whiteford JR. Pathological Angiogenesis Requires Syndecan-4 for Efficient VEGFA-Induced VE-Cadherin Internalization. Arterioscler Thromb Vasc Biol 2021; 41:1374-1389. [PMID: 33596666 PMCID: PMC7613699 DOI: 10.1161/atvbaha.121.315941] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
[Figure: see text].
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Affiliation(s)
- Giulia De Rossi
- William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, Charterhouse Square, London EC1M 6BQ, United Kingdom
- UCL Institute of Ophthalmology, Department of Cell Biology, 11-43 Bath Street, London EC1V 9EL, UK
| | - Maria Vähätupa
- Faculty of Medicine & Health Technology, Tampere University, 33014 Tampere, Finland & Departments of Orthopedics & Traumatology and Tampere Eye Centre, Tampere University Hospital, 33521 Tampere, Finland
| | - Enrico Cristante
- UCL Institute of Ophthalmology, Genetics department, 11-43 Bath Street, London EC1V 9EL, UK
| | - Samantha Arokiasamy
- William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, Charterhouse Square, London EC1M 6BQ, United Kingdom
| | - Sidath E. Liyanage
- UCL Institute of Ophthalmology, Genetics department, 11-43 Bath Street, London EC1V 9EL, UK
| | - Ulrike May
- Faculty of Medicine & Health Technology, Tampere University, 33014 Tampere, Finland & Departments of Orthopedics & Traumatology and Tampere Eye Centre, Tampere University Hospital, 33521 Tampere, Finland
| | - Laura Pellinen
- Faculty of Medicine & Health Technology, Tampere University, 33014 Tampere, Finland & Departments of Orthopedics & Traumatology and Tampere Eye Centre, Tampere University Hospital, 33521 Tampere, Finland
| | - Hannele Uusitalo-Järvinen
- Faculty of Medicine & Health Technology, Tampere University, 33014 Tampere, Finland & Departments of Orthopedics & Traumatology and Tampere Eye Centre, Tampere University Hospital, 33521 Tampere, Finland
| | - James W. Bainbridge
- UCL Institute of Ophthalmology, Genetics department, 11-43 Bath Street, London EC1V 9EL, UK
- NIHR Biomedical Research Centre at Moorfields Eye Hospital NHS Foundation Trust, City Road, London EC1V 2PD, UK
| | - Tero A.H. Järvinen
- Faculty of Medicine & Health Technology, Tampere University, 33014 Tampere, Finland & Departments of Orthopedics & Traumatology and Tampere Eye Centre, Tampere University Hospital, 33521 Tampere, Finland
| | - James R. Whiteford
- William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, Charterhouse Square, London EC1M 6BQ, United Kingdom
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Uemura A, Fukushima Y. Rho GTPases in Retinal Vascular Diseases. Int J Mol Sci 2021; 22:ijms22073684. [PMID: 33916163 PMCID: PMC8036301 DOI: 10.3390/ijms22073684] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 03/30/2021] [Accepted: 03/31/2021] [Indexed: 02/06/2023] Open
Abstract
The Rho family of small GTPases (Rho GTPases) act as molecular switches that transduce extrinsic stimuli into cytoskeletal rearrangements. In vascular endothelial cells (ECs), Cdc42, Rac1, and RhoA control cell migration and cell–cell junctions downstream of angiogenic and inflammatory cytokines, thereby regulating vascular formation and permeability. While these Rho GTPases are broadly expressed in various types of cells, RhoJ is enriched in angiogenic ECs. Semaphorin 3E (Sema3E) releases RhoJ from the intracellular domain of PlexinD1, by which RhoJ induces actin depolymerization through competition with Cdc42 for their common effector proteins. RhoJ further mediates the Sema3E-induced association of PlexinD1 with vascular endothelial growth factor receptor (VEGFR) 2 and the activation of p38. Upon stimulation with VEGF-A, RhoJ facilitates the formation of a holoreceptor complex comprising VEGFR2, PlexinD1, and neuropilin-1, leading to the prevention of VEGFR2 degradation and the maintenance of intracellular signal transduction. These pleiotropic roles of RhoJ are required for directional EC migration in retinal angiogenesis. This review highlights the latest insights regarding Rho GTPases in the field of vascular biology, as it will be informative to consider their potential as targets for the treatment of aberrant angiogenesis and hyperpermeability in retinal vascular diseases.
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Affiliation(s)
- Akiyoshi Uemura
- Department of Ophthalmology and Visual Science, Nagoya City University Graduate School of Medical Sciences, Nagoya 467-8601, Japan
- Department of Cell Biology, National Cerebral and Cardiovascular Center Research Institute, Osaka 564-8565, Japan
- Proteo-Science Center, Ehime University, Toon 791-0295, Japan
- Uemura Eye Clinic, Nishinomiya 663-8101, Japan
- Correspondence: ; Tel.: +81-798-61-8000
| | - Yoko Fukushima
- Department of Ophthalmology, Osaka University Graduate School of Medicine, Osaka 563-0871, Japan;
- Integrated Frontier Research for Medical Science Division, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Osaka 565-0871, Japan
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Vion AC, Perovic T, Petit C, Hollfinger I, Bartels-Klein E, Frampton E, Gordon E, Claesson-Welsh L, Gerhardt H. Endothelial Cell Orientation and Polarity Are Controlled by Shear Stress and VEGF Through Distinct Signaling Pathways. Front Physiol 2021; 11:623769. [PMID: 33737879 PMCID: PMC7960671 DOI: 10.3389/fphys.2020.623769] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Accepted: 12/08/2020] [Indexed: 12/14/2022] Open
Abstract
Vascular networks form, remodel and mature under the influence of multiple signals of mechanical or chemical nature. How endothelial cells read and interpret these signals, and how they integrate information when they are exposed to both simultaneously is poorly understood. Here, we show using flow-induced shear stress and VEGF-A treatment on endothelial cells in vitro, that the response to the magnitude of a mechanical stimulus is influenced by the concentration of a chemical stimulus, and vice versa. By combining different flow levels and different VEGF-A concentrations, front-rear polarity of endothelial cells against the flow direction was established in a flow and VEGF-A dose-response while their alignment with the flow displayed a biphasic response depending on the VEGF-A dose (perpendicular at physiological dose, aligned at no or pathological dose of VEGF-A). The effect of pharmaceutical inhibitors demonstrated that while VEGFR2 is essential for both polarity and orientation establishment in response to flow with and without VEGF-A, different downstream effectors were engaged depending on the presence of VEGF-A. Thus, Src family inhibition (c-Src, Yes, Fyn together) impaired alignment and polarity without VEGF-A while FAK inhibition modified polarity and alignment only when endothelial cells were exposed to VEGF-A. Studying endothelial cells in the aortas of VEGFR2Y949F mutant mice and SRC iEC-KO mice confirmed the role of VEGFR2 and specified the role of c-SRC in vivo. Endothelial cells of VEGFR2Y949F mutant mice lost their polarity and alignment while endothelial cells from SRC iEC-KO mice only showed reduced polarity. We propose here that VEGFR2 is a sensor able to integrate chemical and mechanical information simultaneously and that the underlying pathways and mechanisms activated will depend on the co-stimulation. Flow alone shifts VEGFR2 signaling toward a Src family pathway activation and a junctional effect (both in vitro and in vivo) while flow and VEGF-A together shift VEGFR2 signaling toward focal adhesion activation (in vitro) both modifying cell responses that govern orientation and polarity.
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Affiliation(s)
- Anne-Clémence Vion
- Integrative Vascular Biology Laboratory, Max Delbruck Center for Molecular Medicine, Berlin, Germany.,Université de Nantes, CNRS, INSERM, l'institut du thorax, Nantes, France
| | - Tijana Perovic
- Integrative Vascular Biology Laboratory, Max Delbruck Center for Molecular Medicine, Berlin, Germany
| | - Charlie Petit
- Integrative Vascular Biology Laboratory, Max Delbruck Center for Molecular Medicine, Berlin, Germany
| | - Irene Hollfinger
- Integrative Vascular Biology Laboratory, Max Delbruck Center for Molecular Medicine, Berlin, Germany
| | - Eireen Bartels-Klein
- Integrative Vascular Biology Laboratory, Max Delbruck Center for Molecular Medicine, Berlin, Germany
| | - Emmanuelle Frampton
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - Emma Gordon
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia.,Beijer and Science for Life Laboratories, Rudbeck Laboratory, Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | - Lena Claesson-Welsh
- Beijer and Science for Life Laboratories, Rudbeck Laboratory, Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | - Holger Gerhardt
- Integrative Vascular Biology Laboratory, Max Delbruck Center for Molecular Medicine, Berlin, Germany.,DZHK (German Center for Cardiovascular Research), Berlin, Germany.,Berlin Institute of Health (BIH), Berlin, Germany
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60
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Abdelgawad ME, Desterke C, Uzan G, Naserian S. Single-cell transcriptomic profiling and characterization of endothelial progenitor cells: new approach for finding novel markers. Stem Cell Res Ther 2021; 12:145. [PMID: 33627177 PMCID: PMC7905656 DOI: 10.1186/s13287-021-02185-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Accepted: 01/24/2021] [Indexed: 12/14/2022] Open
Abstract
Background Endothelial progenitor cells (EPCs) are promising candidates for the cellular therapy of peripheral arterial and cardiovascular diseases. However, hitherto there is no specific marker(s) defining precisely EPCs. Herein, we are proposing a new in silico approach for finding novel EPC markers. Methods We assembled five groups of chosen EPC-related genes/factors using PubMed literature and Gene Ontology databases. This shortened database of EPC factors was fed into publically published transcriptome matrix to compare their expression between endothelial colony-forming cells (ECFCs), HUVECs, and two adult endothelial cell types (ECs) from the skin and adipose tissue. Further, the database was used for functional enrichment on Mouse Phenotype database and protein-protein interaction network analyses. Moreover, we built a digital matrix of healthy donors’ PBMCs (33 thousand single-cell transcriptomes) and analyzed the expression of these EPC factors. Results Transcriptome analyses showed that BMP2, 4, and ephrinB2 were exclusively highly expressed in EPCs; the expression of neuropilin-1 and VEGF-C were significantly higher in EPCs and HUVECs compared with other ECs; Notch 1 was highly expressed in EPCs and skin-ECs; MIR21 was highly expressed in skin-ECs; PECAM-1 was significantly higher in EPCs and adipose ECs. Moreover, functional enrichment of EPC-related genes on Mouse Phenotype and STRING protein database has revealed significant relations between chosen EPC factors and endothelial and vascular functions, development, and morphogenesis, where ephrinB2, BMP2, and BMP4 were highly expressed in EPCs and were connected to abnormal vascular functions. Single-cell RNA-sequencing analyses have revealed that among the EPC-regulated markers in transcriptome analyses, (i) ICAM1 and Endoglin were weekly expressed in the monocyte compartment of the peripheral blood; (ii) CD163 and CD36 were highly expressed in the CD14+ monocyte compartment whereas CSF1R was highly expressed in the CD16+ monocyte compartment, (iii) L-selectin and IL6R were globally expressed in the lymphoid/myeloid compartments, and (iv) interestingly, PLAUR/UPAR and NOTCH2 were highly expressed in both CD14+ and CD16+ monocytic compartments. Conclusions The current study has identified novel EPC markers that could be used for better characterization of EPC subpopulation in adult peripheral blood and subsequent usage of EPCs for various cell therapy and regenerative medicine applications.
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Affiliation(s)
- Mohamed Essameldin Abdelgawad
- Biochemistry & Molecular Biotechnology Division, Chemistry Department, Faculty of Science; Innovative Cellular Microenvironment Optimization Platform (ICMOP), Helwan University, Cairo, Egypt. .,Inserm UMR-S-MD 1197, Hôpital Paul Brousse - Bâtiment Lavoisier, 12-14 avenue Paul Vaillant Couturier, 94800, Villejuif, France. .,Paris-Saclay University, Villejuif, France.
| | - Christophe Desterke
- Paris-Saclay University, Villejuif, France.,Inserm UMR-S-MD A9, Hôpital Paul Brousse, Villejuif, France
| | - Georges Uzan
- Inserm UMR-S-MD 1197, Hôpital Paul Brousse - Bâtiment Lavoisier, 12-14 avenue Paul Vaillant Couturier, 94800, Villejuif, France.,Paris-Saclay University, Villejuif, France
| | - Sina Naserian
- Inserm UMR-S-MD 1197, Hôpital Paul Brousse - Bâtiment Lavoisier, 12-14 avenue Paul Vaillant Couturier, 94800, Villejuif, France. .,Paris-Saclay University, Villejuif, France. .,CellMedEx, Saint Maur des Fossés, France.
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61
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Grimsley-Myers CM, Isaacson RH, Cadwell CM, Campos J, Hernandes MS, Myers KR, Seo T, Giang W, Griendling KK, Kowalczyk AP. VE-cadherin endocytosis controls vascular integrity and patterning during development. J Cell Biol 2021; 219:151601. [PMID: 32232465 PMCID: PMC7199849 DOI: 10.1083/jcb.201909081] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Revised: 01/10/2020] [Accepted: 02/28/2020] [Indexed: 12/18/2022] Open
Abstract
Tissue morphogenesis requires dynamic intercellular contacts that are subsequently stabilized as tissues mature. The mechanisms governing these competing adhesive properties are not fully understood. Using gain- and loss-of-function approaches, we tested the role of p120-catenin (p120) and VE-cadherin (VE-cad) endocytosis in vascular development using mouse mutants that exhibit increased (VE-cadGGG/GGG) or decreased (VE-cadDEE/DEE) internalization. VE-cadGGG/GGG mutant mice exhibited reduced VE-cad-p120 binding, reduced VE-cad levels, microvascular hemorrhaging, and decreased survival. By contrast, VE-cadDEE/DEE mutants exhibited normal vascular permeability but displayed microvascular patterning defects. Interestingly, VE-cadDEE/DEE mutant mice did not require endothelial p120, demonstrating that p120 is dispensable in the context of a stabilized cadherin. In vitro, VE-cadDEE mutant cells displayed defects in polarization and cell migration that were rescued by uncoupling VE-cadDEE from actin. These results indicate that cadherin endocytosis coordinates cell polarity and migration cues through actin remodeling. Collectively, our results indicate that regulated cadherin endocytosis is essential for both dynamic cell movements and establishment of stable tissue architecture.
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Affiliation(s)
| | - Robin H Isaacson
- Department of Cell Biology, Emory University School of Medicine, Atlanta, GA
| | - Chantel M Cadwell
- Department of Cell Biology, Emory University School of Medicine, Atlanta, GA
| | - Jazmin Campos
- Department of Cell Biology, Emory University School of Medicine, Atlanta, GA
| | - Marina S Hernandes
- Division of Cardiology, Department of Medicine, Emory University School of Medicine, Atlanta, GA
| | - Kenneth R Myers
- Department of Cell Biology, Emory University School of Medicine, Atlanta, GA
| | - Tadahiko Seo
- Department of Cell Biology, Emory University School of Medicine, Atlanta, GA
| | - William Giang
- Department of Cell Biology, Emory University School of Medicine, Atlanta, GA
| | - Kathy K Griendling
- Division of Cardiology, Department of Medicine, Emory University School of Medicine, Atlanta, GA
| | - Andrew P Kowalczyk
- Department of Cell Biology, Department of Dermatology, and Winship Cancer Institute, Emory University School of Medicine, Atlanta, GA
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Li Z, Li B, Wang J, Lu Y, Chen AFY, Sun K, Yu Y, Chen S. GAA deficiency promotes angiogenesis through upregulation of Rac1 induced by autophagy disorder. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2021; 1868:118969. [PMID: 33513417 DOI: 10.1016/j.bbamcr.2021.118969] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 10/10/2020] [Revised: 01/05/2021] [Accepted: 01/21/2021] [Indexed: 01/14/2023]
Abstract
Angiogenesis, the formation of new blood vessels from pre-existing ones, is vital for vertebrate development and adult homeostasis. Acid α-glucosidase (GAA) is a glycoside hydrolase involved in the lysosomal breakdown of glycogen. Our previous study showed that GAA was highly expressed in mouse pulmonary veins. While whether GAA was involved in angiogenesis remained largely unknown, thus, we performed knockdown experiments both in vivo and in vitro and endothelial cell function experiments to clarify this concern point. We identified that GAA expressed widely at different levels during zebrafish embryonic development and GAA morphants showed excessive angiogenesis of ISV at later stage. In GAA knockdown HUVECs, the migration and tube formation capacity were increased, resulted from the formation of large lamellipodia-like protrusions at the edge of cells. By analyzing autophagic flux, we found that autophagy disorder was the mechanism of GAA knockdown-induced excessive angiogenesis. The block of autophagic flux caused upregulation of Rac1, a small GTPase, and the latter promoted excessive sprouts in zebrafish and enhanced angiogenic behavior in HUVECs. In addition, overexpression of transcription factor E3, a master regulator of autophagy, rescued upregulation of RAC1 and enhanced angiogenic function in GAA-knockdown HUVECs. Also, inhibition of Rac1 partly restored enhanced angiogenic function in GAA-knockdown HUVECs. Taken together, our study firstly reported a novel function of GAA in angiogenesis which is mediated by upregulation of Rac1 induced by autophagy disorder.
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Affiliation(s)
- Zhuoyan Li
- Department of Pediatric Cardiology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - Baolei Li
- Department of Pediatric Cardiology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - Jing Wang
- Department of Pediatric Cardiology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - Yanan Lu
- Department of Pediatric Cardiology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - Alex F Y Chen
- Institute for Developmental and Regenerative Cardiovascular Medicine, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - Kun Sun
- Department of Pediatric Cardiology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - Yu Yu
- Department of Pediatric Cardiology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China; Institute for Developmental and Regenerative Cardiovascular Medicine, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China.
| | - Sun Chen
- Department of Pediatric Cardiology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China.
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Seebach J, Klusmeier N, Schnittler H. Autoregulatory "Multitasking" at Endothelial Cell Junctions by Junction-Associated Intermittent Lamellipodia Controls Barrier Properties. Front Physiol 2021; 11:586921. [PMID: 33488392 PMCID: PMC7815704 DOI: 10.3389/fphys.2020.586921] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Accepted: 11/30/2020] [Indexed: 01/12/2023] Open
Abstract
Vascular endothelial cell (EC) junctions are key structures controlling tissue homeostasis in physiology. In the last three decades, excellent studies have addressed many aspects of this complex and highly dynamic regulation, including cell signaling, remodeling processes of the proteins of tight junctions, adherens junctions, and gap junctions, the cytoskeleton, and post-transcriptional modifications, transcriptional activation, and gene silencing. In this dynamic process, vascular endothelial cadherin (VE-cadherin) provides the core structure of EC junctions mediating the physical adhesion of cells as well as the control of barrier function and monolayer integrity via remodeling processes, regulation of protein expression and post-translational modifications. In recent years, research teams have documented locally restricted dynamics of EC junctions in which actin-driven protrusions in plasma membranes play a central role. In this regard, our research group showed that the dynamics of VE-cadherin is driven by small (1-5 μm) actin-mediated protrusions in plasma membranes that, due to this specific function, were named "junction-associated intermittent lamellipodia" (JAIL). JAIL form at overlapping, adjacent cells, and exactly at this site new VE-cadherin interactions occur, leading to new VE-cadherin adhesion sites, a process that restores weak or lost VE-cadherin adhesion. Mechanistically, JAIL formation occurs locally restricted (1-5 μm) and underlies autoregulation in which the local VE-cadherin concentration is an important parameter. A decrease in the local concentration of VE-cadherin stimulates JAIL formation, whereas an increase in the concentration of VE-cadherin blocks it. JAIL mediated VE-cadherin remodeling at the subjunctional level have been shown to be of crucial importance in angiogenesis, wound healing, and changes in permeability during inflammation. The concept of subjunctional regulation of EC junctions is strongly supported by permeability assays, which can be employed to quantify actin-driven subjunctional changes. In this brief review, we summarize and discuss the current knowledge and concepts of subjunctional regulation in the endothelium.
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Affiliation(s)
- Jochen Seebach
- Institute of Anatomy and Vascular Biology, Westfälische Wilhelms-Universität Münster, Münster, Germany
| | - Nadine Klusmeier
- Institute of Anatomy and Vascular Biology, Westfälische Wilhelms-Universität Münster, Münster, Germany
| | - Hans Schnittler
- Institute of Anatomy and Vascular Biology, Westfälische Wilhelms-Universität Münster, Münster, Germany
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Yu Z, Zeng J, Wang J, Cui Y, Song X, Zhang Y, Cheng X, Hou N, Teng Y, Lan Y, Chen Y, Yang X. Hepatocyte growth factor-regulated tyrosine kinase substrate is essential for endothelial cell polarity and cerebrovascular stability. Cardiovasc Res 2021; 117:533-546. [PMID: 32044971 PMCID: PMC7820882 DOI: 10.1093/cvr/cvaa016] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Revised: 11/05/2019] [Accepted: 01/31/2020] [Indexed: 01/09/2023] Open
Abstract
AIMS Hepatocyte growth factor-regulated tyrosine kinase substrate (Hgs), a key component of the endosomal sorting complex required for transport (ESCRT), has been implicated in many essential biological processes. However, the physiological role of endogenous Hgs in the vascular system has not previously been explored. Here, we have generated brain endothelial cell (EC) specific Hgs knockout mice to uncover the function of Hgs in EC polarity and cerebrovascular stability. METHODS AND RESULTS Knockout of Hgs in brain ECs led to impaired endothelial apicobasal polarity and brain vessel collapse in mice. We determined that Hgs is essential for recycling of vascular endothelial (VE)-cadherin to the plasma membrane, since loss of Hgs blocked trafficking of endocytosed VE-cadherin from early endosomes to recycling endosomes, and impaired the motility of recycling endosomes. Supportively, overexpression of the motor kinesin family member 13A (KIF13A) restored endosomal recycling and rescued abrogated polarized trafficking and distribution of VE-cadherin in Hgs knockdown ECs. CONCLUSION These data uncover a novel physiological function of Hgs and support an essential role for the ESCRT machinery in the maintenance of EC polarity and cerebrovascular stability.
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Affiliation(s)
- Zhenyang Yu
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences (Beijing), Beijing Institute of Lifeomics, Beijing 102206, China
| | - Jian Zeng
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences (Beijing), Beijing Institute of Lifeomics, Beijing 102206, China
| | - Jun Wang
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences (Beijing), Beijing Institute of Lifeomics, Beijing 102206, China
| | - Yaxiong Cui
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences (Beijing), Beijing Institute of Lifeomics, Beijing 102206, China
| | - Xiaopeng Song
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences (Beijing), Beijing Institute of Lifeomics, Beijing 102206, China
| | - Yizhe Zhang
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences (Beijing), Beijing Institute of Lifeomics, Beijing 102206, China
| | - Xuan Cheng
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences (Beijing), Beijing Institute of Lifeomics, Beijing 102206, China
| | - Ning Hou
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences (Beijing), Beijing Institute of Lifeomics, Beijing 102206, China
| | - Yan Teng
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences (Beijing), Beijing Institute of Lifeomics, Beijing 102206, China
| | - Yu Lan
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences (Beijing), Beijing Institute of Lifeomics, Beijing 102206, China
| | - Yeguang Chen
- The State Key Laboratory of Biomembrane and Membrane Biotechnology, Tsinghua-Peking Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Xiao Yang
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences (Beijing), Beijing Institute of Lifeomics, Beijing 102206, China
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Li L, Liu Q, Shang T, Song W, Xu D, Allen TD, Wang X, Jeong J, Lobe CG, Liu J. Aberrant Activation of Notch1 Signaling in Glomerular Endothelium Induces Albuminuria. Circ Res 2021; 128:602-618. [PMID: 33435713 DOI: 10.1161/circresaha.120.316970] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
RATIONALE Glomerular capillaries are lined with a highly specialized fenestrated endothelium and contribute to the glomerular filtration barrier. The Notch signaling pathway is involved in regulation of glomerular filtration barrier, but its role in glomerular endothelium has not been investigated due to the embryonic lethality of animal models with genetic modification of Notch pathway components in the endothelium. OBJECTIVE To determine the effects of aberrant activation of the Notch signaling in glomerular endothelium and the underlying molecular mechanisms. METHODS AND RESULTS We established the ZEG-NICD1 (notch1 intracellular domain)/Tie2-tTA/Tet-O-Cre transgenic mouse model to constitutively activate Notch1 signaling in endothelial cells of adult mice. The triple transgenic mice developed severe albuminuria with significantly decreased VE-cadherin (vascular endothelial cadherin) expression in the glomerular endothelium. In vitro studies showed that either NICD1 (Notch1 intracellular domain) lentiviral infection or treatment with Notch ligand DLL4 (delta-like ligand 4) markedly reduced VE-cadherin expression and increased monolayer permeability of human renal glomerular endothelial cells. In addition, Notch1 activation or gene knockdown of VE-cadherin reduced the glomerular endothelial glycocalyx. Further investigation demonstrated that activated Notch1 suppression of VE-cadherin was through the transcription factors SNAI1 (snail family transcriptional repressor 1) and ERG (Ets related gene), which bind to the -373 E-box and the -134/-118 ETS (E26 transformation-specific) element of the VE-cadherin promoter, respectively. CONCLUSIONS Our results reveal novel regulatory mechanisms whereby endothelial Notch1 signaling dictates the level of VE-cadherin through the transcription factors SNAI1 and ERG, leading to dysfunction of glomerular filtration barrier and induction of albuminuria. Graphic Abstract: A graphic abstract is available for this article.
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Affiliation(s)
- Liqun Li
- Institute of Microvascular Medicine, Medical Research Center (L.L., Q.L., J.L.), Shandong Provincial Qianfoshan Hospital, The First Affiliated Hospital of Shandong First Medical University, Jinan, China.,School of Medicine, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, China (L.L., T.S., W.S., X.W.)
| | - Qiang Liu
- Institute of Microvascular Medicine, Medical Research Center (L.L., Q.L., J.L.), Shandong Provincial Qianfoshan Hospital, The First Affiliated Hospital of Shandong First Medical University, Jinan, China
| | - Tongyao Shang
- School of Medicine, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, China (L.L., T.S., W.S., X.W.)
| | - Wei Song
- School of Medicine, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, China (L.L., T.S., W.S., X.W.)
| | - Dongmei Xu
- Department of Nephrology (D.X.), Shandong Provincial Qianfoshan Hospital, The First Affiliated Hospital of Shandong First Medical University, Jinan, China
| | - Thaddeus D Allen
- Molecular and Cellular Biology Division, Sunnybrook Health Science Centre (T.D.A., J.J., C.G.L.), University of Toronto, Ontario, Canada.,Department of Medical Biophysics (T.D.A., C.G.L.), University of Toronto, Ontario, Canada.,Tradewind BioScience, Daly City, California (T.D.A.)
| | - Xia Wang
- School of Medicine, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, China (L.L., T.S., W.S., X.W.)
| | - James Jeong
- General Internal Medicine, Markham Stouffville Hospital, Toronto, Ontario, Canada (J.J.)
| | - Corrinne G Lobe
- Molecular and Cellular Biology Division, Sunnybrook Health Science Centre (T.D.A., J.J., C.G.L.), University of Toronto, Ontario, Canada.,Department of Medical Biophysics (T.D.A., C.G.L.), University of Toronto, Ontario, Canada
| | - Ju Liu
- Institute of Microvascular Medicine, Medical Research Center (L.L., Q.L., J.L.), Shandong Provincial Qianfoshan Hospital, The First Affiliated Hospital of Shandong First Medical University, Jinan, China
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66
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Marsico G, Jin C, Abbah SA, Brauchle EM, Thomas D, Rebelo AL, Orbanić D, Chantepie S, Contessotto P, Papy-Garcia D, Rodriguez-Cabello C, Kilcoyne M, Schenke-Layland K, Karlsson NG, McCullagh KJA, Pandit A. Elastin-like hydrogel stimulates angiogenesis in a severe model of critical limb ischemia (CLI): An insight into the glyco-host response. Biomaterials 2021; 269:120641. [PMID: 33493768 DOI: 10.1016/j.biomaterials.2020.120641] [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: 08/14/2020] [Revised: 12/24/2020] [Accepted: 12/29/2020] [Indexed: 12/15/2022]
Abstract
Critical limb ischemia (CLI) is characterized by the impairment of microcirculation, necrosis and inflammation of the muscular tissue. Although the role of glycans in mediating inflammation has been reported, changes in the glycosylation following muscle ischemia remains poorly understood. Here, a murine CLI model was used to show the increase of high mannose, α-(2, 6)-sialic acid and the decrease of hybrid and bisected N-glycans as glycosylation associated with the ischemic environment. Using this model, the efficacy of an elastin-like recombinamers (ELR) hydrogel was assessed. The hydrogel modulates key angiogenic signaling pathways, resulting in capillary formation, and ECM remodeling. Arterioles formation, reduction of fibrosis and anti-inflammatory macrophage polarization wa also induced by the hydrogel administration. Modulation of glycosylation was observed, suggesting, in particular, a role for mannosylation and sialylation in the mediation of tissue repair. Our study elucidates the angiogenic potential of the ELR hydrogel for CLI applications and identifies glycosylation alterations as potential new therapeutic targets.
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Affiliation(s)
- Grazia Marsico
- CÚRAM SFI Research Centre for Medical Devices, National University of Ireland Galway, Galway H92 W2TY, Ireland
| | - Chunseng Jin
- Department of Medical Biochemistry and Cell Biology at Institute of Biomedicine, Sahlgrenska Academy, The University of Gothenburg, Sweden
| | - Sunny A Abbah
- CÚRAM SFI Research Centre for Medical Devices, National University of Ireland Galway, Galway H92 W2TY, Ireland
| | - Eva M Brauchle
- Department of Women's Health, Research Institute for Women's Health, The Eberhard-Karls-University Tuebingen, Germany; The Natural and Medical Sciences Institute (NMI) at the University of Tübingen, Reutlingen, Germany
| | - Dilip Thomas
- CÚRAM SFI Research Centre for Medical Devices, National University of Ireland Galway, Galway H92 W2TY, Ireland
| | - Ana Lúcia Rebelo
- CÚRAM SFI Research Centre for Medical Devices, National University of Ireland Galway, Galway H92 W2TY, Ireland
| | | | - Sandrine Chantepie
- Cell Growth, Tissue Repair and Regeneration (CRRET), UPEC EA 4397/ERL CNRS 9215, Université Paris Est Créteil, Université Paris Est, Créteil, France
| | - Paolo Contessotto
- CÚRAM SFI Research Centre for Medical Devices, National University of Ireland Galway, Galway H92 W2TY, Ireland
| | - Dulce Papy-Garcia
- Cell Growth, Tissue Repair and Regeneration (CRRET), UPEC EA 4397/ERL CNRS 9215, Université Paris Est Créteil, Université Paris Est, Créteil, France
| | | | - Michelle Kilcoyne
- CÚRAM SFI Research Centre for Medical Devices, National University of Ireland Galway, Galway H92 W2TY, Ireland; Carbohydrate Signalling Group, Microbiology, School of Natural Sciences, National University of Ireland Galway, Galway H92 W2TY, Ireland
| | - K Schenke-Layland
- Department of Women's Health, Research Institute for Women's Health, The Eberhard-Karls-University Tuebingen, Germany; The Natural and Medical Sciences Institute (NMI) at the University of Tübingen, Reutlingen, Germany
| | - N G Karlsson
- Department of Medical Biochemistry and Cell Biology at Institute of Biomedicine, Sahlgrenska Academy, The University of Gothenburg, Sweden
| | - Karl J A McCullagh
- Physiology Department, National University of Ireland Galway, Galway H92 W2TY, Ireland
| | - Abhay Pandit
- CÚRAM SFI Research Centre for Medical Devices, National University of Ireland Galway, Galway H92 W2TY, Ireland.
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Hemkemeyer SA, Vollmer V, Schwarz V, Lohmann B, Honnert U, Taha M, Schnittler HJ, Bähler M. Local Myo9b RhoGAP activity regulates cell motility. J Biol Chem 2021; 296:100136. [PMID: 33268376 PMCID: PMC7949024 DOI: 10.1074/jbc.ra120.013623] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Revised: 11/25/2020] [Accepted: 12/02/2020] [Indexed: 12/22/2022] Open
Abstract
To migrate, cells assume a polarized morphology, extending forward with a leading edge with their trailing edge retracting back toward the cell body. Both cell extension and retraction critically depend on the organization and dynamics of the actin cytoskeleton, and the small, monomeric GTPases Rac and Rho are important regulators of actin. Activation of Rac induces actin polymerization and cell extension, whereas activation of Rho enhances acto-myosin II contractility and cell retraction. To coordinate migration, these processes must be carefully regulated. The myosin Myo9b, a Rho GTPase-activating protein (GAP), negatively regulates Rho activity and deletion of Myo9b in leukocytes impairs cell migration through increased Rho activity. However, it is not known whether cell motility is regulated by global or local inhibition of Rho activity by Myo9b. Here, we addressed this question by using Myo9b-deficient macrophage-like cells that expressed different recombinant Myo9b constructs. We found that Myo9b accumulates in lamellipodial extensions generated by Rac-induced actin polymerization as a function of its motor activity. Deletion of Myo9b in HL-60-derived macrophages altered cell morphology and impaired cell migration. Reintroduction of Myo9b or Myo9b motor and GAP mutants revealed that local GAP activity rescues cell morphology and migration. In summary, Rac activation leads to actin polymerization and recruitment of Myo9b, which locally inhibits Rho activity to enhance directional cell migration.
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Affiliation(s)
- Sandra A Hemkemeyer
- Institute of Molecular Cell Biology, Westfalian Wilhelms University Münster, Münster, Germany
| | - Veith Vollmer
- Institute of Molecular Cell Biology, Westfalian Wilhelms University Münster, Münster, Germany
| | - Vera Schwarz
- Institute of Molecular Cell Biology, Westfalian Wilhelms University Münster, Münster, Germany
| | - Birgit Lohmann
- Institute of Molecular Cell Biology, Westfalian Wilhelms University Münster, Münster, Germany
| | - Ulrike Honnert
- Institute of Molecular Cell Biology, Westfalian Wilhelms University Münster, Münster, Germany
| | - Muna Taha
- Institute of Anatomy & Vascular Biology, Westfalian Wilhelms University Münster, Münster, Germany
| | - Hans-Joachim Schnittler
- Institute of Anatomy & Vascular Biology, Westfalian Wilhelms University Münster, Münster, Germany
| | - Martin Bähler
- Institute of Molecular Cell Biology, Westfalian Wilhelms University Münster, Münster, Germany.
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Brücker L, Kretschmer V, May-Simera HL. The entangled relationship between cilia and actin. Int J Biochem Cell Biol 2020; 129:105877. [PMID: 33166678 DOI: 10.1016/j.biocel.2020.105877] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 10/23/2020] [Accepted: 10/26/2020] [Indexed: 12/14/2022]
Abstract
Primary cilia are microtubule-based sensory cell organelles that are vital for tissue and organ development. They act as an antenna, receiving and transducing signals, enabling communication between cells. Defects in ciliogenesis result in severe genetic disorders collectively termed ciliopathies. In recent years, the importance of the direct and indirect involvement of actin regulators in ciliogenesis came into focus as it was shown that F-actin polymerisation impacts ciliation. The ciliary basal body was further identified as both a microtubule and actin organising centre. In the current review, we summarize recent studies on F-actin in and around primary cilia, focusing on different actin regulators and their effect on ciliogenesis, from the initial steps of basal body positioning and regulation of ciliary assembly and disassembly. Since primary cilia are also involved in several intracellular signalling pathways such as planar cell polarity (PCP), subsequently affecting actin rearrangements, the multiple effectors of this pathway are highlighted in more detail with a focus on the feedback loops connecting actin networks and cilia proteins. Finally, we elucidate the role of actin regulators in the development of ciliopathy symptoms and cancer.
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Affiliation(s)
- Lena Brücker
- Cilia Cell Biology, Institute of Molecular Physiology, Johannes-Gutenberg University, Mainz, Germany
| | - Viola Kretschmer
- Cilia Cell Biology, Institute of Molecular Physiology, Johannes-Gutenberg University, Mainz, Germany
| | - Helen Louise May-Simera
- Cilia Cell Biology, Institute of Molecular Physiology, Johannes-Gutenberg University, Mainz, Germany.
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69
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Kumar G, Dey SK, Kundu S. Functional implications of vascular endothelium in regulation of endothelial nitric oxide synthesis to control blood pressure and cardiac functions. Life Sci 2020; 259:118377. [PMID: 32898526 DOI: 10.1016/j.lfs.2020.118377] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2020] [Revised: 08/24/2020] [Accepted: 08/31/2020] [Indexed: 11/29/2022]
Abstract
The endothelium is the innermost vascular lining performing significant roles all over the human body while maintaining the blood pressure at physiological levels. Malfunction of endothelium is thus recognized as a biomarker linked with many vascular diseases including but not limited to atherosclerosis, hypertension and thrombosis. Alternatively, prevention of endothelial malfunctioning or regulating the functions of its associated physiological partners like endothelial nitric oxide synthase can prevent the associated vascular disorders which account for the highest death toll worldwide. While many anti-hypertensive drugs are available commercially, a comprehensive description of the key physiological roles of the endothelium and its regulation by endothelial nitric oxide synthase or vice versa is the need of the hour to understand its contribution in vascular homeostasis. This, in turn, will help in designing new therapeutics targeting endothelial nitric oxide synthase or its interacting partners present in the cellular pool. This review describes the central role of vascular endothelium in the regulation of endothelial nitric oxide synthase while outlining the emerging drug targets present in the vasculature with potential to treat vascular disorders including hypertension.
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Affiliation(s)
- Gaurav Kumar
- Department of Biochemistry, University of Delhi, South Campus, New Delhi 110021, India
| | - Sanjay Kumar Dey
- Department of Biochemistry, University of Delhi, South Campus, New Delhi 110021, India; Center for Advanced Biotechnology and Medicine, Rutgers University, NJ 08854, USA
| | - Suman Kundu
- Department of Biochemistry, University of Delhi, South Campus, New Delhi 110021, India.
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Taha M, Aldirawi M, März S, Seebach J, Odenthal-Schnittler M, Bondareva O, Bojovic V, Schmandra T, Wirth B, Mietkowska M, Rottner K, Schnittler H. EPLIN-α and -β Isoforms Modulate Endothelial Cell Dynamics through a Spatiotemporally Differentiated Interaction with Actin. Cell Rep 2020; 29:1010-1026.e6. [PMID: 31644899 DOI: 10.1016/j.celrep.2019.09.043] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Revised: 08/08/2019] [Accepted: 09/13/2019] [Indexed: 12/14/2022] Open
Abstract
Actin-binding proteins are essential for linear and branched actin filament dynamics that control shape change, cell migration, and cell junction remodeling in vascular endothelium (endothelial cells [ECs]). The epithelial protein lost in neoplasm (EPLIN) is an actin-binding protein, expressed as EPLIN-α and EPLIN-β by alternative promoters; however, the isoform-specific functions are not yet understood. Aortic compared to cava vein ECs and shear stress-exposed cultured ECs express increased EPLIN-β levels that stabilize stress fibers. In contrast, EPLIN-α expression is increased in growing and migrating ECs, is targeted to membrane protrusions, and terminates their growth via interaction with the Arp2/3 complex. The data indicate that EPLIN-α controls protrusion dynamics while EPLIN-β has an actin filament stabilizing role, which is consistent with FRAP analyses demonstrating a lower EPLIN-β turnover rate compared to EPLIN-α. Together, EPLIN isoforms differentially control actin dynamics in ECs, essential in shear stress responses, cell migration, and barrier function.
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Affiliation(s)
- Muna Taha
- Institute of Anatomy and Vascular Biology, Westfälische Wilhelms University of Münster, 48149 Münster, Germany; Cells-in-Motion Cluster of Excellence (EXC 1003 CiM), Westfälische Wilhelms University of Münster, 48149 Münster, Germany
| | - Mohammed Aldirawi
- Institute of Anatomy and Vascular Biology, Westfälische Wilhelms University of Münster, 48149 Münster, Germany; Cells-in-Motion Cluster of Excellence (EXC 1003 CiM), Westfälische Wilhelms University of Münster, 48149 Münster, Germany
| | - Sigrid März
- Institute of Anatomy and Vascular Biology, Westfälische Wilhelms University of Münster, 48149 Münster, Germany; Cells-in-Motion Cluster of Excellence (EXC 1003 CiM), Westfälische Wilhelms University of Münster, 48149 Münster, Germany
| | - Jochen Seebach
- Institute of Anatomy and Vascular Biology, Westfälische Wilhelms University of Münster, 48149 Münster, Germany; Cells-in-Motion Cluster of Excellence (EXC 1003 CiM), Westfälische Wilhelms University of Münster, 48149 Münster, Germany
| | - Maria Odenthal-Schnittler
- Cells-in-Motion Cluster of Excellence (EXC 1003 CiM), Westfälische Wilhelms University of Münster, 48149 Münster, Germany; Department of Ophthalmology, Westfälische Wilhelms University of Münster, Medical Center, 48149 Münster, Germany
| | - Olga Bondareva
- Institute of Anatomy and Vascular Biology, Westfälische Wilhelms University of Münster, 48149 Münster, Germany; Cells-in-Motion Cluster of Excellence (EXC 1003 CiM), Westfälische Wilhelms University of Münster, 48149 Münster, Germany
| | - Vesna Bojovic
- Institute of Anatomy and Vascular Biology, Westfälische Wilhelms University of Münster, 48149 Münster, Germany
| | - Thomas Schmandra
- Heart and Vascular Clinic Bad Neustadt, Bad Neustadt a.d. Saale, Germany
| | - Benedikt Wirth
- Cells-in-Motion Cluster of Excellence (EXC 1003 CiM), Westfälische Wilhelms University of Münster, 48149 Münster, Germany; Institute for Analysis and Numerics, Westfälische Wilhelms University of Münster, 48149 Münster Germany
| | - Magdalena Mietkowska
- Division of Molecular Cell Biology, Zoological Institute, Technische Universität Braunschweig, Spielmannstrasse 7, 38106 Braunschweig, Germany; Molecular Cell Biology Group, Helmholtz Centre for Infection Research, Inhoffenstrasse 7, 38124 Braunschweig, Germany
| | - Klemens Rottner
- Division of Molecular Cell Biology, Zoological Institute, Technische Universität Braunschweig, Spielmannstrasse 7, 38106 Braunschweig, Germany; Molecular Cell Biology Group, Helmholtz Centre for Infection Research, Inhoffenstrasse 7, 38124 Braunschweig, Germany
| | - Hans Schnittler
- Institute of Anatomy and Vascular Biology, Westfälische Wilhelms University of Münster, 48149 Münster, Germany; Cells-in-Motion Cluster of Excellence (EXC 1003 CiM), Westfälische Wilhelms University of Münster, 48149 Münster, Germany.
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71
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Anwar M, Mehta D. Post-translational modifications of S1PR1 and endothelial barrier regulation. Biochim Biophys Acta Mol Cell Biol Lipids 2020; 1865:158760. [PMID: 32585303 PMCID: PMC7409382 DOI: 10.1016/j.bbalip.2020.158760] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 06/09/2020] [Accepted: 06/15/2020] [Indexed: 12/16/2022]
Abstract
Sphingosine-1-phosphate receptor-1 (S1PR1), a G-protein coupled receptor that is expressed in endothelium and activated upon ligation by the bioactive lipid sphingosine-1-phosphate (S1P), is an important vascular-barrier protective mechanism at the level of adherens junctions (AJ). Loss of endothelial barrier function is a central factor in the pathogenesis of various inflammatory conditions characterized by protein-rich lung edema formation, such as acute respiratory distress syndrome (ARDS). While several S1PR1 agonists are available, the challenge of arresting the progression of protein-rich edema formation remains to be met. In this review, we discuss the role of S1PRs, especially S1PR1, in regulating endothelial barrier function. We review recent findings showing that replenishment of the pool of cell-surface S1PR1 may be crucial to the effectiveness of S1P in repairing the endothelial barrier. In this context, we discuss the S1P generating machinery and mechanisms that regulate S1PR1 at the cell surface and their impact on endothelial barrier function.
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Affiliation(s)
- Mumtaz Anwar
- Department of Pharmacology and Center for Lung and Vascular Biology, University of Illinois at Chicago Chicago, IL 60612, United States of America
| | - Dolly Mehta
- Department of Pharmacology and Center for Lung and Vascular Biology, University of Illinois at Chicago Chicago, IL 60612, United States of America.
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72
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Hiepen C, Mendez PL, Knaus P. It Takes Two to Tango: Endothelial TGFβ/BMP Signaling Crosstalk with Mechanobiology. Cells 2020; 9:E1965. [PMID: 32858894 PMCID: PMC7564048 DOI: 10.3390/cells9091965] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 08/19/2020] [Accepted: 08/22/2020] [Indexed: 02/06/2023] Open
Abstract
Bone morphogenetic proteins (BMPs) are members of the transforming growth factor-beta (TGFβ) superfamily of cytokines. While some ligand members are potent inducers of angiogenesis, others promote vascular homeostasis. However, the precise understanding of the molecular mechanisms underlying these functions is still a growing research field. In bone, the tissue in which BMPs were first discovered, crosstalk of TGFβ/BMP signaling with mechanobiology is well understood. Likewise, the endothelium represents a tissue that is constantly exposed to multiple mechanical triggers, such as wall shear stress, elicited by blood flow or strain, and tension from the surrounding cells and to the extracellular matrix. To integrate mechanical stimuli, the cytoskeleton plays a pivotal role in the transduction of these forces in endothelial cells. Importantly, mechanical forces integrate on several levels of the TGFβ/BMP pathway, such as receptors and SMADs, but also global cell-architecture and nuclear chromatin re-organization. Here, we summarize the current literature on crosstalk mechanisms between biochemical cues elicited by TGFβ/BMP growth factors and mechanical cues, as shear stress or matrix stiffness that collectively orchestrate endothelial function. We focus on the different subcellular compartments in which the forces are sensed and integrated into the TGFβ/BMP growth factor signaling.
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Affiliation(s)
| | | | - Petra Knaus
- Knaus-Lab/Signal Transduction, Institute for Chemistry and Biochemistry, Freie Universitaet Berlin, 14195 Berlin, Germany; (C.H.); (P.-L.M.)
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73
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Wang R, Zhou W, Zhu X, Zhou N, Yang F, Sun B, Li X. Differences in Neuregulin 4 Expression in Children: Effects of Fat Depots and Obese Status. Endocr Res 2020; 45:190-201. [PMID: 31986906 DOI: 10.1080/07435800.2020.1721528] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
PURPOSE To observe the expression of Nrg4, uncoupling protein-1 (UCP1), tumor necrosis factor α (TNFα), CD31, VE-cadherin/CDH5 and vascular endothelial growth factor A (VEGF-A) mRNA in abdominal subcutaneous (SC), omental (OM) adipose tissue in children with relation to anthropometric parameters. Further to verify the effect of inflammatory mediators on Nrg4 and UCP1 mRNA expression in adipocytes. METHODS Paired SC and OM adipose tissues were obtained from 58 children. In vitro, the adipocytes isolated from primary inguinal adipose tissue of mice were treated with TNFα (50 ng/ml) for 12-48 h. mRNA levels of Nrg4, UCP1 and TNFα were determined by real-time PCR. RESULTS Nrg4, UCP1, VEGF-A and CDH5 mRNA levels in SC were significantly higher than those in OM adipose tissue and the mRNA level of TNFα showed the opposite result. Moreover, Nrg4 and UCP1 mRNA in SC were significantly lower in overweight children compared to normal weight children. Nrg4 in SC and OM was negatively associated with BMISDS, WHtR. CDH55 mRNA in OM was negatively associated with WHR. VEGF-A was positively correlated with Nrg4 in SC. In vitro, Nrg4 and UCP1 mRNA levels in adipocytes were dose- and time-dependently decreased under TNFα treatment. CONCLUSIONS Nrg4, UCP1, VEGF-A and CDH5 mRNA expression in adipose tissues display a depot-specific pattern. Nrg4 mRNA levels in adipose tissue are decreased with obesity and associated with WAT browning and angiogenesis. TNFα may be involved in the regulation of Nrg4 level in adipose tissue, which may be one of the causes of the down-regulation of Nrg4 expression in obesity with chronic inflammatory response.
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Affiliation(s)
- Ran Wang
- Department of Children Health Care, Children's Hospital of Nanjing Medical University , Nanjing, China
| | - Wei Zhou
- Department of Children Health Care, Children's Hospital of Nanjing Medical University , Nanjing, China
| | - Xiaolei Zhu
- Department of Children Health Care, Children's Hospital of Nanjing Medical University , Nanjing, China
| | - Nan Zhou
- Department of Children Health Care, Children's Hospital of Nanjing Medical University , Nanjing, China
| | - Fan Yang
- Department of Children Health Care, Children's Hospital of Nanjing Medical University , Nanjing, China
| | - Bin Sun
- Department of General Surgery, Children's Hospital of Nanjing Medical University , Nanjing, China
| | - Xiaonan Li
- Department of Children Health Care, Children's Hospital of Nanjing Medical University , Nanjing, China
- Institute of Pediatric Research, Nanjing Medical University , Nanjing, China
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74
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Werner AC, Weckbach LT, Salvermoser M, Pitter B, Cao J, Maier-Begandt D, Forné I, Schnittler HJ, Walzog B, Montanez E. Coronin 1B Controls Endothelial Actin Dynamics at Cell-Cell Junctions and Is Required for Endothelial Network Assembly. Front Cell Dev Biol 2020; 8:708. [PMID: 32850828 PMCID: PMC7411154 DOI: 10.3389/fcell.2020.00708] [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: 06/02/2020] [Accepted: 07/13/2020] [Indexed: 12/28/2022] Open
Abstract
Development and homeostasis of blood vessels critically depend on the regulation of endothelial cell–cell junctions. VE-cadherin (VEcad)-based cell–cell junctions are connected to the actin cytoskeleton and regulated by actin-binding proteins. Coronin 1B (Coro1B) is an actin binding protein that controls actin networks at classical lamellipodia. The role of Coro1B in endothelial cells (ECs) is not fully understood and investigated in this study. Here, we demonstrate that Coro1B is a novel component and regulator of cell–cell junctions in ECs. Immunofluorescence studies show that Coro1B colocalizes with VEcad at cell–cell junctions in monolayers of ECs. Live-cell imaging reveals that Coro1B is recruited to, and operated at actin-driven membrane protrusions at cell–cell junctions. Coro1B is recruited to cell–cell junctions via a mechanism that requires the relaxation of the actomyosin cytoskeleton. By analyzing the Coro1B interactome, we identify integrin-linked kinase (ILK) as new Coro1B-associated protein. Coro1B colocalizes with α-parvin, an interactor of ILK, at the leading edge of lamellipodia protrusions. Functional experiments reveal that depletion of Coro1B causes defects in the actin cytoskeleton and cell–cell junctions. Finally, in matrigel tube network assays, depletion of Coro1B results in reduced network complexity, tube number and tube length. Together, our findings point toward a critical role for Coro1B in the dynamic remodeling of endothelial cell–cell junctions and the assembly of endothelial networks.
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Affiliation(s)
- Ann-Cathrin Werner
- Institute of Cardiovascular Physiology and Pathophysiology, Biomedical Center, LMU Munich, Munich, Germany.,Walter Brendel Center of Experimental Medicine, University Hospital, LMU Munich, Munich, Germany
| | - Ludwig T Weckbach
- Institute of Cardiovascular Physiology and Pathophysiology, Biomedical Center, LMU Munich, Munich, Germany.,Walter Brendel Center of Experimental Medicine, University Hospital, LMU Munich, Munich, Germany.,Medizinische Klinik I, Klinikum Großhadern, Munich, Germany
| | - Melanie Salvermoser
- Institute of Cardiovascular Physiology and Pathophysiology, Biomedical Center, LMU Munich, Munich, Germany.,Walter Brendel Center of Experimental Medicine, University Hospital, LMU Munich, Munich, Germany
| | - Bettina Pitter
- Institute of Cardiovascular Physiology and Pathophysiology, Biomedical Center, LMU Munich, Munich, Germany.,Walter Brendel Center of Experimental Medicine, University Hospital, LMU Munich, Munich, Germany
| | - Jiahui Cao
- Institute of Anatomy and Vascular Biology, Westfälische Wilhelms-Universität Münster, Münster, Germany
| | - Daniela Maier-Begandt
- Institute of Cardiovascular Physiology and Pathophysiology, Biomedical Center, LMU Munich, Munich, Germany.,Walter Brendel Center of Experimental Medicine, University Hospital, LMU Munich, Munich, Germany
| | - Ignasi Forné
- Protein Analysis Unit, Biomedical Center, LMU Munich, Munich, Germany
| | - Hans-Joachim Schnittler
- Institute of Anatomy and Vascular Biology, Westfälische Wilhelms-Universität Münster, Münster, Germany
| | - Barbara Walzog
- Institute of Cardiovascular Physiology and Pathophysiology, Biomedical Center, LMU Munich, Munich, Germany.,Walter Brendel Center of Experimental Medicine, University Hospital, LMU Munich, Munich, Germany
| | - Eloi Montanez
- Institute of Cardiovascular Physiology and Pathophysiology, Biomedical Center, LMU Munich, Munich, Germany.,Walter Brendel Center of Experimental Medicine, University Hospital, LMU Munich, Munich, Germany.,Department of Physiological Sciences, Faculty of Medicine and Health Sciences, University of Barcelona and IDIBELL, Barcelona, Spain
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75
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Kariri YA, Aleskandarany MA, Joseph C, Kurozumi S, Mohammed OJ, Toss MS, Green AR, Rakha EA. Molecular Complexity of Lymphovascular Invasion: The Role of Cell Migration in Breast Cancer as a Prototype. Pathobiology 2020; 87:218-231. [PMID: 32645698 DOI: 10.1159/000508337] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Accepted: 04/30/2020] [Indexed: 12/24/2022] Open
Abstract
Lymphovascular invasion (LVI) is associated with poor outcome in breast cancer (BC); however, its underlying mechanisms remain ill-defined. LVI in BC develops through complex molecular pathways involving not only the interplay with the surrounding microenvironment along with endothelial cells lining the lymphovascular spaces but also changes in the malignant epithelial cells with the acquisition of more invasive and migration abilities. In this review, we focus on the key features that enable tumour cell detachment from the primary niche, their migration and interaction with the surrounding microenvironment as well as the crosstalk with the vascular endothelial cells, which eventually lead to intravasation of tumour cells and LVI. Intravascular tumour cell survival and migration, their distant site extravasation, stromal invasion and growth are part of the metastatic cascade. Cancer cell migration commences with loss of tumour cells' cohesion initiating the invasion and migration processes which are usually accompanied by the accumulation of specific cellular and molecular changes that enable tumour cells to overcome the blockades of the extracellular matrix, spread into surrounding tissues and interact with stromal cells and immune cells. Thereafter, tumour cells migrate further via interacting with lymphovascular endothelial cells to penetrate the vessel wall leading ultimately to intravasation of cancer cells. Exploring the potential factors influencing cell migration in LVI can help in understanding the underlying mechanisms of LVI to identify targeted therapy in BC.
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Affiliation(s)
- Yousif A Kariri
- Nottingham Breast Cancer Research Centre, Division of Cancer and Stem Cells, School of Medicine, The University of Nottingham, Nottingham, United Kingdom.,Faculty of Applied Medical Science, Shaqra University, Riyadh, Saudi Arabia.,Nottingham Breast Cancer Research Centre, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham Biodiscovery Institute, Nottingham, United Kingdom
| | - Mohammed A Aleskandarany
- Nottingham Breast Cancer Research Centre, Division of Cancer and Stem Cells, School of Medicine, The University of Nottingham, Nottingham, United Kingdom
| | - Chitra Joseph
- Nottingham Breast Cancer Research Centre, Division of Cancer and Stem Cells, School of Medicine, The University of Nottingham, Nottingham, United Kingdom
| | - Sasagu Kurozumi
- Nottingham Breast Cancer Research Centre, Division of Cancer and Stem Cells, School of Medicine, The University of Nottingham, Nottingham, United Kingdom
| | - Omar J Mohammed
- Nottingham Breast Cancer Research Centre, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham Biodiscovery Institute, Nottingham, United Kingdom
| | - Michael S Toss
- Nottingham Breast Cancer Research Centre, Division of Cancer and Stem Cells, School of Medicine, The University of Nottingham, Nottingham, United Kingdom
| | - Andrew R Green
- Nottingham Breast Cancer Research Centre, Division of Cancer and Stem Cells, School of Medicine, The University of Nottingham, Nottingham, United Kingdom.,Nottingham Breast Cancer Research Centre, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham Biodiscovery Institute, Nottingham, United Kingdom
| | - Emad A Rakha
- Nottingham Breast Cancer Research Centre, Division of Cancer and Stem Cells, School of Medicine, The University of Nottingham, Nottingham, United Kingdom,
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76
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Fonseca CG, Barbacena P, Franco CA. Endothelial cells on the move: dynamics in vascular morphogenesis and disease. VASCULAR BIOLOGY 2020; 2:H29-H43. [PMID: 32935077 PMCID: PMC7487603 DOI: 10.1530/vb-20-0007] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Accepted: 07/02/2020] [Indexed: 12/11/2022]
Abstract
The vascular system is a hierarchically organized network of blood vessels that play crucial roles in embryogenesis, homeostasis and disease. Blood vessels are built by endothelial cells – the cells lining the interior of blood vessels – through a process named vascular morphogenesis. Endothelial cells react to different biomechanical signals in their environment by adjusting their behavior to: (1) invade, proliferate and fuse to form new vessels (angiogenesis); (2) remodel, regress and establish a hierarchy in the network (patterning); and (3) maintain network stability (quiescence). Each step involves the coordination of endothelial cell differentiation, proliferation, polarity, migration, rearrangements and shape changes to ensure network integrity and an efficient barrier between blood and tissues. In this review, we highlighted the relevance and the mechanisms involving endothelial cell migration during different steps of vascular morphogenesis. We further present evidence on how impaired endothelial cell dynamics can contribute to pathology.
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Affiliation(s)
- Catarina G Fonseca
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal.,Instituto Superior Técnico, Universidade de Lisboa, Lisboa, Portugal
| | - Pedro Barbacena
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
| | - Claudio A Franco
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal.,Instituto de Histologia e Biologia do Desenvolvimento, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
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77
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Tisch N, Freire-Valls A, Yerbes R, Paredes I, La Porta S, Wang X, Martín-Pérez R, Castro L, Wong WWL, Coultas L, Strilic B, Gröne HJ, Hielscher T, Mogler C, Adams RH, Heiduschka P, Claesson-Welsh L, Mazzone M, López-Rivas A, Schmidt T, Augustin HG, Ruiz de Almodovar C. Caspase-8 modulates physiological and pathological angiogenesis during retina development. J Clin Invest 2020; 129:5092-5107. [PMID: 31454332 DOI: 10.1172/jci122767] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Accepted: 08/20/2019] [Indexed: 12/29/2022] Open
Abstract
During developmental angiogenesis, blood vessels grow and remodel to ultimately build a hierarchical vascular network. Whether, how, cell death signaling molecules contribute to blood vessel formation is still not well understood. Caspase-8 (Casp-8), a key protease in the extrinsic cell death-signaling pathway, regulates cell death via both apoptosis and necroptosis. Here, we show that expression of Casp-8 in endothelial cells (ECs) is required for proper postnatal retina angiogenesis. EC-specific Casp-8-KO pups (Casp-8ECKO) showed reduced retina angiogenesis, as the loss of Casp-8 reduced EC proliferation, sprouting, and migration independently of its cell death function. Instead, the loss of Casp-8 caused hyperactivation of p38 MAPK downstream of receptor-interacting serine/threonine protein kinase 3 (RIPK3) and destabilization of vascular endothelial cadherin (VE-cadherin) at EC junctions. In a mouse model of oxygen-induced retinopathy (OIR) resembling retinopathy of prematurity (ROP), loss of Casp-8 in ECs was beneficial, as pathological neovascularization was reduced in Casp-8ECKO pups. Taking these data together, we show that Casp-8 acts in a cell death-independent manner in ECs to regulate the formation of the retina vasculature and that Casp-8 in ECs is mechanistically involved in the pathophysiology of ROP.
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Affiliation(s)
- Nathalie Tisch
- Biochemistry Center.,European Center for Angioscience (ECAS).,Institute for Transfusion Medicine and Immunology, Medical Faculty Mannheim, and
| | - Aida Freire-Valls
- Biochemistry Center.,Department of General, Visceral and Transplantation Surgery, Heidelberg University, Heidelberg, Germany
| | - Rosario Yerbes
- Biochemistry Center.,Centro Andaluz de Biología Molecular y Medicina Regenerativa (CABIMER), Consejo Superior de Investigaciones Científicas (CSIC), Universidad de Sevilla and Universidad Pablo de Olavide, Sevilla, Spain
| | - Isidora Paredes
- Biochemistry Center.,European Center for Angioscience (ECAS).,Institute for Transfusion Medicine and Immunology, Medical Faculty Mannheim, and
| | - Silvia La Porta
- European Center for Angioscience (ECAS).,Division of Vascular Oncology and Metastasis, German Cancer Research Center, Heidelberg, Germany
| | | | - Rosa Martín-Pérez
- Lab of Tumor Inflammation and Angiogenesis, Center for Cancer Biology (VIB), Leuven, Belgium.,Lab of Tumor Inflammation and Angiogenesis, Department of Oncology, Katholieke Universiteit Leuven, Leuven, Belgium
| | | | - Wendy Wei-Lynn Wong
- Institute of Experimental Immunology, University of Zurich, Zurich, Switzerland
| | - Leigh Coultas
- Development and Cancer Division, Walter and Eliza Hall Institute of Medical Research, Parkville, Australia.,Department of Medical Biology, University of Melbourne, Melbourne, Australia
| | - Boris Strilic
- Department of Pharmacology, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
| | | | - Thomas Hielscher
- Division of Biostatistics, German Cancer Research Center, Heidelberg, Germany
| | - Carolin Mogler
- Institute of Pathology, TUM School of Medicine, Technical University of Munich, Munich, Germany
| | - Ralf H Adams
- Department of Tissue Morphogenesis, Max Planck Institute for Molecular Biomedicine, Münster, Germany.,Faculty of Medicine and
| | - Peter Heiduschka
- Research Laboratory, Department of Ophthalmology, University Medical Center, University of Münster, Münster, Germany
| | - Lena Claesson-Welsh
- Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Uppsala University, Uppsala, Sweden
| | - Massimiliano Mazzone
- Lab of Tumor Inflammation and Angiogenesis, Center for Cancer Biology (VIB), Leuven, Belgium.,Lab of Tumor Inflammation and Angiogenesis, Department of Oncology, Katholieke Universiteit Leuven, Leuven, Belgium
| | - Abelardo López-Rivas
- Centro Andaluz de Biología Molecular y Medicina Regenerativa (CABIMER), Consejo Superior de Investigaciones Científicas (CSIC), Universidad de Sevilla and Universidad Pablo de Olavide, Sevilla, Spain.,Centro de Investigación Biomédica en Red-Oncología (CIBERONC), Carlos III Health Institute, Madrid, Spain
| | - Thomas Schmidt
- Department of General, Visceral and Transplantation Surgery, Heidelberg University, Heidelberg, Germany
| | - Hellmut G Augustin
- European Center for Angioscience (ECAS).,Division of Vascular Oncology and Metastasis, German Cancer Research Center, Heidelberg, Germany
| | - Carmen Ruiz de Almodovar
- Biochemistry Center.,European Center for Angioscience (ECAS).,Institute for Transfusion Medicine and Immunology, Medical Faculty Mannheim, and
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78
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Ma X, Uchida Y, Wei T, Liu C, Adams RH, Kubota Y, Gutkind JS, Mukouyama YS, Adelstein RS. Nonmuscle myosin 2 regulates cortical stability during sprouting angiogenesis. Mol Biol Cell 2020; 31:1974-1987. [PMID: 32583739 PMCID: PMC7543065 DOI: 10.1091/mbc.e20-03-0175] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Among the three nonmuscle myosin 2 (NM2) paralogs, NM 2A and 2B, but not 2C, are detected in endothelial cells. To study the role of NM2 in vascular formation, we ablate NM2 in endothelial cells in mice. Ablating NM2A, but not NM2B, results in reduced blood vessel coverage and increased vascular branching in the developing mouse skin and coronary vasculature. NM2B becomes essential for vascular formation when NM2A expression is limited. Mice ablated for NM2B and one allele of NM2A develop vascular abnormalities similar to those in NM2A ablated mice. Using the embryoid body angiogenic sprouting assay in collagen gels reveals that NM2A is required for persistent angiogenic sprouting by stabilizing the endothelial cell cortex, and thereby preventing excessive branching and ensuring persistent migration of the endothelial sprouts. Mechanistically, NM2 promotes focal adhesion formation and cortical protrusion retraction during angiogenic sprouting. Further studies demonstrate the critical role of Rho kinase–activated NM2 signaling in the regulation of angiogenic sprouting in vitro and in vivo.
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Affiliation(s)
- Xuefei Ma
- Laboratory of Molecular Cardiology, National Institutes of Health, Bethesda, MD 20892-1762
| | - Yutaka Uchida
- Laboratory of Stem Cell and Neurovascular Biology, National Institutes of Health, Bethesda, MD 20892-1762
| | - Tingyi Wei
- Laboratory of Molecular Cardiology, National Institutes of Health, Bethesda, MD 20892-1762
| | - Chengyu Liu
- Transgenic Core Facility, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892-1762
| | - Ralf H Adams
- Department of Tissue Morphogenesis, Max Planck Institute for Molecular Biomedicine and Faculty of Medicine, University of Munster, D-48149 Munster, Germany
| | - Yoshiaki Kubota
- Department of Anatomy, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo160-8582, Japan
| | - J Silvio Gutkind
- Moores Cancer Center, University of California, San Diego, La Jolla, CA 92093
| | - Yoh-Suke Mukouyama
- Laboratory of Stem Cell and Neurovascular Biology, National Institutes of Health, Bethesda, MD 20892-1762
| | - Robert S Adelstein
- Laboratory of Molecular Cardiology, National Institutes of Health, Bethesda, MD 20892-1762
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79
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Ehling M, Celus W, Martín-Pérez R, Alba-Rovira R, Willox S, Ponti D, Cid MC, Jones EAV, Di Conza G, Mazzone M. B55α/PP2A Limits Endothelial Cell Apoptosis During Vascular Remodeling: A Complementary Approach To Disrupt Pathological Vessels? Circ Res 2020; 127:707-723. [PMID: 32527198 DOI: 10.1161/circresaha.119.316071] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
RATIONALE How endothelial cells (ECs) migrate and form an immature vascular plexus has been extensively studied. Yet, mechanisms underlying vascular remodeling remain poorly established. A better understanding of these processes may lead to the design of novel therapeutic strategies complementary to current angiogenesis inhibitors. OBJECTIVE Starting from our previous observations that PP2A (protein phosphatase 2) regulates the HIF (hypoxia-inducible factor)/PHD-2 (prolyl hydroxylase 2)-constituted oxygen machinery, we hypothesized that this axis could play an important role during blood vessel formation, tissue perfusion, and oxygen restoration. METHODS AND RESULTS We show that the PP2A regulatory subunit B55α is at the crossroad between vessel pruning and vessel maturation. Blood vessels with high B55α counter cell stress conditions and thrive for stabilization and maturation. When B55α is inhibited, ECs cannot cope with cell stress and undergo apoptosis, leading to massive pruning of nascent blood vessels. Mechanistically, we found that the B55α/PP2A complex restrains PHD-2 activity, promoting EC survival in a HIF-dependent manner, and furthermore dephosphorylates p38, altogether protecting ECs against cell stress occurring, for example, during the onset of blood flow. In tumors, EC-specific B55α deficiency induces pruning of immature-like tumor blood vessels resulting in delayed tumor growth and metastasis, without affecting nonpathological vessels. Consistently, systemic administration of a pan-PP2A inhibitor disrupts vascular network formation and tumor progression in vivo without additional effects on B55α-deficient vessels. CONCLUSIONS Our data underline a unique role of the B55α/PP2A phosphatase complex in vessel remodeling and suggest the use of PP2A-inhibitors as potent antiangiogenic drugs targeting specifically nascent blood vessels with a mode-of-action complementary to VEGF-R (vascular endothelial growth factor receptor)-targeted therapies. Graphical Abstract: A graphical abstract is available for this article.
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Affiliation(s)
- Manuel Ehling
- From the Laboratory of Tumor Inflammation and Angiogenesis, Center for Cancer Biology (CCB), VIB, Leuven, Belgium (M.E., W.C., R.M.-P., R.A.-R., S.W., D.P., G.D.C., M.M.).,Laboratory of Tumor Inflammation and Angiogenesis, and Department of Oncology (M.E., W.C., R.M.-P., R.A.-R., S.W., D.P., G.D.C., M.M.), KU Leuven, Belgium
| | - Ward Celus
- From the Laboratory of Tumor Inflammation and Angiogenesis, Center for Cancer Biology (CCB), VIB, Leuven, Belgium (M.E., W.C., R.M.-P., R.A.-R., S.W., D.P., G.D.C., M.M.).,Laboratory of Tumor Inflammation and Angiogenesis, and Department of Oncology (M.E., W.C., R.M.-P., R.A.-R., S.W., D.P., G.D.C., M.M.), KU Leuven, Belgium
| | - Rosa Martín-Pérez
- From the Laboratory of Tumor Inflammation and Angiogenesis, Center for Cancer Biology (CCB), VIB, Leuven, Belgium (M.E., W.C., R.M.-P., R.A.-R., S.W., D.P., G.D.C., M.M.).,Laboratory of Tumor Inflammation and Angiogenesis, and Department of Oncology (M.E., W.C., R.M.-P., R.A.-R., S.W., D.P., G.D.C., M.M.), KU Leuven, Belgium
| | - Roser Alba-Rovira
- From the Laboratory of Tumor Inflammation and Angiogenesis, Center for Cancer Biology (CCB), VIB, Leuven, Belgium (M.E., W.C., R.M.-P., R.A.-R., S.W., D.P., G.D.C., M.M.).,Laboratory of Tumor Inflammation and Angiogenesis, and Department of Oncology (M.E., W.C., R.M.-P., R.A.-R., S.W., D.P., G.D.C., M.M.), KU Leuven, Belgium.,Vasculitis Research Unit, Department of Autoimmune Diseases, Hospital Clínic, University of Barcelona, Institut d'Investigacions Biomèdiques August Pi I Sunyer (IDIBAPS), Barcelona (R.A.-R., M.C.C.)
| | - Sander Willox
- From the Laboratory of Tumor Inflammation and Angiogenesis, Center for Cancer Biology (CCB), VIB, Leuven, Belgium (M.E., W.C., R.M.-P., R.A.-R., S.W., D.P., G.D.C., M.M.).,Laboratory of Tumor Inflammation and Angiogenesis, and Department of Oncology (M.E., W.C., R.M.-P., R.A.-R., S.W., D.P., G.D.C., M.M.), KU Leuven, Belgium
| | - Donatella Ponti
- From the Laboratory of Tumor Inflammation and Angiogenesis, Center for Cancer Biology (CCB), VIB, Leuven, Belgium (M.E., W.C., R.M.-P., R.A.-R., S.W., D.P., G.D.C., M.M.).,Laboratory of Tumor Inflammation and Angiogenesis, and Department of Oncology (M.E., W.C., R.M.-P., R.A.-R., S.W., D.P., G.D.C., M.M.), KU Leuven, Belgium.,Medical-Surgical Sciences and Biotechnologies, University of Rome Sapienza, Latina (D.P.)
| | - Maria C Cid
- Vasculitis Research Unit, Department of Autoimmune Diseases, Hospital Clínic, University of Barcelona, Institut d'Investigacions Biomèdiques August Pi I Sunyer (IDIBAPS), Barcelona (R.A.-R., M.C.C.)
| | | | - Giusy Di Conza
- From the Laboratory of Tumor Inflammation and Angiogenesis, Center for Cancer Biology (CCB), VIB, Leuven, Belgium (M.E., W.C., R.M.-P., R.A.-R., S.W., D.P., G.D.C., M.M.).,Laboratory of Tumor Inflammation and Angiogenesis, and Department of Oncology (M.E., W.C., R.M.-P., R.A.-R., S.W., D.P., G.D.C., M.M.), KU Leuven, Belgium
| | - Massimiliano Mazzone
- From the Laboratory of Tumor Inflammation and Angiogenesis, Center for Cancer Biology (CCB), VIB, Leuven, Belgium (M.E., W.C., R.M.-P., R.A.-R., S.W., D.P., G.D.C., M.M.).,Laboratory of Tumor Inflammation and Angiogenesis, and Department of Oncology (M.E., W.C., R.M.-P., R.A.-R., S.W., D.P., G.D.C., M.M.), KU Leuven, Belgium
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80
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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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81
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Jafarkhani M, Salehi Z, Mashayekhan S, Kowsari-Esfahan R, Orive G, Dolatshahi-Pirouz A, Bonakdar S, Shokrgozar MA. Induced cell migration based on a bioactive hydrogel sheet combined with a perfused microfluidic system. Biomed Mater 2020; 15:045010. [PMID: 32120352 DOI: 10.1088/1748-605x/ab7b90] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Endothelial cell migration is a crucial step in the process of new blood vessel formation-a necessary process to maintain cell viability inside thick tissue constructs. Here, we report a new method for maintaining cell viability and inducing cell migration using a perfused microfluidic platform based on collagen gel and a gradient hydrogel sheet. Due to the helpful role of the extracellular matrix components in cell viability, we developed a hydrogel sheet from decellularized tissue (DT) of the bovine heart and chitosan (CS). The results showed that hydrogel sheets with an optimum weight ratio of CS/DT = 2 possess a porosity of around 75%, a mechanical strength of 23 kPa, and display cell viability up to 78%. Then, we immobilized a radial gradient of vascular endothelial growth factor (VEGF) on the hydrogel sheet to promote human umbilical vein endothelial cell migration. Finally, we incorporated the whole system as an entirety on the top of the microfluidic platform and studied cell migration through the hydrogel sheet in the presence of soluble and immobilized VEGF. The results demonstrated that immobilized VEGF stimulated cell migration in the hydrogel sheet at all depths compared with soluble VEGF. The results also showed that applying a VEGF gradient in both soluble and immobilized states had a significant effect on cell migration at limited depths (<100 μm). The main finding of this study is a significant improvement in cell migration using an in vivo imitating, cost-efficient and highly reproducible platform, which may open up a new perspective for tissue engineering applications.
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Affiliation(s)
- Mahboubeh Jafarkhani
- School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran
- Technical University of Denmark, DTU Nanotech, Center for Intestinal Absorption and Transport of Biopharmaceuticals, 2800 Kgs, Lyngby, Denmark
| | - Zeinab Salehi
- School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran
| | - Shohreh Mashayekhan
- Department of Chemical and Petroleum Engineering, Sharif University of Technology, Tehran 11365-8639, Iran
| | - Reza Kowsari-Esfahan
- Department of Cell Engineering, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Gorka Orive
- NanoBioCel Group, Laboratory of Pharmaceutics, School of Pharmacy, University of the Basque Country UPV/EHU, Paseo de la Universidad 7, Vitoria-Gasteiz 01006, Spain
- Biomedical Research Networking Centre in Bioengineering, Biomaterials, and Nanomedicine (CIBER-BBN), Vitoria-Gasteiz, Spain
- University Institute for Regenerative Medicine and Oral Implantology - UIRMI (UPV/EHU-Fundación Eduardo Anitua), Vitoria, Spain
- Singapore Eye Research Institute, The Academia, 20 College Road, Discovery Tower, Singapore
| | - Alireza Dolatshahi-Pirouz
- Technical University of Denmark, DTU Nanotech, Center for Intestinal Absorption and Transport of Biopharmaceuticals, 2800 Kgs, Lyngby, Denmark
- Regenerative Biomaterials, Radboud University Medical Center, Philips van Leydenlaan 25, Nijmegen 6525 EX, The Netherlands
| | - Shahin Bonakdar
- National Cell Bank of Iran, Pasteur Institute of Iran, Tehran, Iran
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82
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Zhang T, Lih D, Nagao RJ, Xue J, Berthier E, Himmelfarb J, Zheng Y, Theberge AB. Open microfluidic coculture reveals paracrine signaling from human kidney epithelial cells promotes kidney specificity of endothelial cells. Am J Physiol Renal Physiol 2020; 319:F41-F51. [PMID: 32390509 DOI: 10.1152/ajprenal.00069.2020] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
Endothelial cells (ECs) from different human organs possess organ-specific characteristics that support specific tissue regeneration and organ development. EC specificity is identified by both intrinsic and extrinsic cues, among which the parenchyma and organ-specific microenvironment are critical contributors. These extrinsic cues are, however, largely lost during ex vivo cultures. Outstanding challenges remain to understand and reestablish EC organ specificity for in vitro studies to recapitulate human organ-specific physiology. Here, we designed an open microfluidic platform to study the role of human kidney tubular epithelial cells in supporting EC specificity. The platform consists of two independent cell culture regions segregated with a half wall; culture media are added to connect the two culture regions at a desired time point, and signaling molecules can travel across the half wall (paracrine signaling). Specifically, we report that in the microscale coculture device, primary human kidney proximal tubule epithelial cells (HPTECs) rescued primary human kidney peritubular microvascular EC (HKMEC) monolayer integrity and fenestra formation and that HPTECs upregulated key HKMEC kidney-specific genes (hepatocyte nuclear factor 1 homeobox B, adherens junctions-associated protein 1, and potassium voltage-gated channel subfamily J member 16) and endothelial activation genes (vascular cell adhesion molecule-1, matrix metalloproteinase-7, and matrix metalloproteinase-10) in coculture. Coculturing with HPTECs also promoted kidney-specific genotype expression in human umbilical vein ECs and human pluripotent stem cell-derived ECs. Compared with culture in HPTEC conditioned media, coculture of ECs with HPTECs showed increased upregulation of kidney-specific genes, suggesting potential bidirectional paracrine signaling. Importantly, our device is compatible with standard pipettes, incubators, and imaging readouts and could also be easily adapted to study cell signaling between other rare or sensitive cells.
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Affiliation(s)
- Tianzi Zhang
- Department of Chemistry, University of Washington, Seattle, Washington
| | - Daniel Lih
- Department of Bioengineering, University of Washington, Seattle, Washington
| | - Ryan J Nagao
- Department of Bioengineering, University of Washington, Seattle, Washington
| | - Jun Xue
- Department of Bioengineering, University of Washington, Seattle, Washington
| | - Erwin Berthier
- Department of Chemistry, University of Washington, Seattle, Washington
| | - Jonathan Himmelfarb
- Division of Nephrology, Department of Medicine, University of Washington, Seattle, Washington.,Kidney Research Institute, University of Washington, Seattle, Washington
| | - Ying Zheng
- Department of Bioengineering, University of Washington, Seattle, Washington.,Kidney Research Institute, University of Washington, Seattle, Washington.,Institute for Stem Cell and Regenerative Medicine, University of Washington, Seattle, Washington
| | - Ashleigh B Theberge
- Department of Chemistry, University of Washington, Seattle, Washington.,Kidney Research Institute, University of Washington, Seattle, Washington.,Department of Urology, University of Washington, Seattle, Washington
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83
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Aziz NS, Yusop N, Ahmad A. Importance of Stem Cell Migration and Angiogenesis Study for Regenerative Cell-based Therapy: A Review. Curr Stem Cell Res Ther 2020; 15:284-299. [DOI: 10.2174/1574888x15666200127145923] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 12/01/2019] [Accepted: 12/11/2019] [Indexed: 12/20/2022]
Abstract
Stem cells play an essential role in maintaining homeostasis, as well as participating in new
tissue regeneration. Over the past 20 years, a great deal of effort has been made to investigate the behaviour
of stem cells to enable their potential use in regenerative medicine. However, a variety of biological
characteristics are known to exist among the different types of stem cells due to variations in
the methodological approach, formulation of cell culture medium, isolation protocol and cellular
niches, as well as species variation. In recent years, cell-based therapy has emerged as one of the advanced
techniques applied in both medical and clinical settings. Cell therapies aim to treat and repair
the injury sites and replace the loss of tissues by stimulating the repair and regeneration process. In
order to enable the use of stem cells in regenerative therapies, further characterisation of cell behaviour,
in terms of their proliferation and differentiation capacity, mainly during the quiescent and inductive
state is regarded as highly necessary. The central focus of regenerative medicine revolves around
the use of human cells, including adult stem cells and induced pluripotent stem cells for cell-based
therapy. The purpose of this review was to examine the existing body of literature on stem cell research
conducted on cellular angiogenesis and migration, to investigate the validity of different strategies and
variations of the cell type used. The information gathered within this review may then be shared with
fellow researchers to assist in future research work, engaging in stem cell homing for cell-based therapy
to enhance wound healing and tissue regeneration process.
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Affiliation(s)
- Nur S. Aziz
- Postgraduate Unit, School of Dentistry, Universiti Sains Malaysia, Kelantan, Malaysia
| | - Norhayati Yusop
- Basic Sciences and Oral Biology Unit, School of Dentistry, Universiti Sains Malaysia, Kelantan, Malaysia
| | - Azlina Ahmad
- Basic Sciences and Oral Biology Unit, School of Dentistry, Universiti Sains Malaysia, Kelantan, Malaysia
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84
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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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85
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Norden C, Lecaudey V. Collective cell migration: general themes and new paradigms. Curr Opin Genet Dev 2019; 57:54-60. [PMID: 31430686 DOI: 10.1016/j.gde.2019.06.013] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2019] [Revised: 06/13/2019] [Accepted: 06/21/2019] [Indexed: 11/16/2022]
Abstract
Collective cell migration plays essential roles in embryogenesis and also contributes to disease states. Recent years have seen immense progress in understanding mechanisms and overarching concepts of collective cell migration. Self-organization of moving groups emerges as an important common feature. This includes self-generating gradients, internal chemotaxis or mechanotaxis and contact-dependent polarization within migrating cell groups. Here, we will discuss these concepts and their applications to classical models of collective cell migration. Further, we discuss new models and paradigms of collective cell migration and elaborate on open questions and future challenges. Answering these questions will help to expand our appreciation of this exciting theme in developmental cell biology and contribute to the understanding of disease states.
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Affiliation(s)
- Caren Norden
- Max Planck Institute of Molecular Cell Biology and Genetics, Pfotenhauerstraße 108, 01307 Dresden, Germany.
| | - Virginie Lecaudey
- Department of Developmental Biology of Vertebrates, Institute for Cell Biology and Neuroscience, Goethe University Frankfurt am Main, Frankfurt am Main, Germany.
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86
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Logan CM, Menko AS. Microtubules: Evolving roles and critical cellular interactions. Exp Biol Med (Maywood) 2019; 244:1240-1254. [PMID: 31387376 DOI: 10.1177/1535370219867296] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Microtubules are cytoskeletal elements known as drivers of directed cell migration, vesicle and organelle trafficking, and mitosis. In this review, we discuss new research in the lens that has shed light into further roles for stable microtubules in the process of development and morphogenesis. In the lens, as well as other systems, distinct roles for characteristically dynamic microtubules and stabilized populations are coming to light. Understanding the mechanisms of microtubule stabilization and the associated microtubule post-translational modifications is an evolving field of study. Appropriate cellular homeostasis relies on not only one cytoskeletal element, but also rather an interaction between cytoskeletal proteins as well as other cellular regulators. Microtubules are key integrators with actin and intermediate filaments, as well as cell–cell junctional proteins and other cellular regulators including myosin and RhoGTPases to maintain this balance.Impact statementThe role of microtubules in cellular functioning is constantly expanding. In this review, we examine new and exciting fields of discovery for microtubule’s involvement in morphogenesis, highlight our evolving understanding of differential roles for stabilized versus dynamic subpopulations, and further understanding of microtubules as a cellular integrator.
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Affiliation(s)
- Caitlin M Logan
- Pathology Anatomy and Cell Biology Department, Thomas Jefferson University, Philadelphia, PA 19107, USA
| | - A Sue Menko
- Pathology Anatomy and Cell Biology Department, Thomas Jefferson University, Philadelphia, PA 19107, USA
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87
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Yoon C, Choi C, Stapleton S, Mirabella T, Howes C, Dong L, King J, Yang J, Oberai A, Eyckmans J, Chen CS. Myosin IIA-mediated forces regulate multicellular integrity during vascular sprouting. Mol Biol Cell 2019; 30:1974-1984. [PMID: 31318321 PMCID: PMC6727772 DOI: 10.1091/mbc.e19-02-0076] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Angiogenic sprouting is a critical process involved in vascular network formation within tissues. During sprouting, tip cells and ensuing stalk cells migrate collectively into the extracellular matrix while preserving cell–cell junctions, forming patent structures that support blood flow. Although several signaling pathways have been identified as controlling sprouting, it remains unclear to what extent this process is mechanoregulated. To address this question, we investigated the role of cellular contractility in sprout morphogenesis, using a biomimetic model of angiogenesis. Three-dimensional maps of mechanical deformations generated by sprouts revealed that mainly leader cells, not stalk cells, exert contractile forces on the surrounding matrix. Surprisingly, inhibiting cellular contractility with blebbistatin did not affect the extent of cellular invasion but resulted in cell–cell dissociation primarily between tip and stalk cells. Closer examination of cell–cell junctions revealed that blebbistatin impaired adherens-junction organization, particularly between tip and stalk cells. Using CRISPR/Cas9-mediated gene editing, we further identified NMIIA as the major isoform responsible for regulating multicellularity and cell contractility during sprouting. Together, these studies reveal a critical role for NMIIA-mediated contractile forces in maintaining multicellularity during sprouting and highlight the central role of forces in regulating cell–cell adhesions during collective motility.
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Affiliation(s)
- Christine Yoon
- Biological Design Center, Department of Biomedical Engineering, Boston University, Boston, MA 02215
| | - Colin Choi
- Biological Design Center, Department of Biomedical Engineering, Boston University, Boston, MA 02215
| | - Sarah Stapleton
- Biological Design Center, Department of Biomedical Engineering, Boston University, Boston, MA 02215
| | - Teodelinda Mirabella
- Biological Design Center, Department of Biomedical Engineering, Boston University, Boston, MA 02215
| | - Caroline Howes
- Department of Mechanical, Aerospace and Nuclear Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180
| | - Li Dong
- Department of Mechanical, Aerospace and Nuclear Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180.,The Institute for Computational Engineering and Sciences, University of Texas at Austin, Austin, TX 78712
| | - Jessica King
- Biological Design Center, Department of Biomedical Engineering, Boston University, Boston, MA 02215
| | - Jinling Yang
- Biological Design Center, Department of Biomedical Engineering, Boston University, Boston, MA 02215
| | - Assad Oberai
- Department of Mechanical, Aerospace and Nuclear Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180.,Department of Aerospace and Mechanical Engineering, University of Southern California, Los Angeles, CA 90007
| | - Jeroen Eyckmans
- Biological Design Center, Department of Biomedical Engineering, Boston University, Boston, MA 02215.,Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115
| | - Christopher S Chen
- Biological Design Center, Department of Biomedical Engineering, Boston University, Boston, MA 02215.,Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115
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88
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Wang X, Obeidat M, Li L, Pasarj P, Aburahess S, Holmes CFB, Ballermann BJ. TIMAP inhibits endothelial myosin light chain phosphatase by competing with MYPT1 for the catalytic protein phosphatase 1 subunit PP1cβ. J Biol Chem 2019; 294:13280-13291. [PMID: 31315927 PMCID: PMC6737228 DOI: 10.1074/jbc.ra118.006075] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Revised: 06/17/2019] [Indexed: 11/06/2022] Open
Abstract
Transforming growth factor-β membrane associated protein (TIMAP) is an endothelial cell (EC)-predominant PP1 regulatory subunit and a member of the myosin phosphatase target (MYPT) protein family. The MYPTs preferentially bind the catalytic protein phosphatase 1 subunit PP1cβ, forming myosin phosphatase holoenzymes. We investigated whether TIMAP/PP1cβ could also function as a myosin phosphatase. Endogenous PP1cβ, myosin light chain 2 (MLC2), and myosin IIA heavy chain coimmunoprecipitated from EC lysates with endogenous TIMAP, and endogenous MLC2 colocalized with TIMAP in EC projections. Purified recombinant GST-TIMAP interacted directly with purified recombinant His-MLC2. However, TIMAP overexpression in EC enhanced MLC2 phosphorylation, an effect not observed with a TIMAP mutant that does not bind PP1cβ. Conversely, MLC2 phosphorylation was reduced in lung lysates from TIMAP-deficient mice and upon silencing of endogenous TIMAP expression in ECs. Ectopically expressed TIMAP slowed the rate of MLC2 dephosphorylation, an effect requiring TIMAP-PP1cβ interaction. The association of MYPT1 with PP1cβ was profoundly reduced in the presence of excess TIMAP, leading to proteasomal MYPT1 degradation. In the absence of TIMAP, MYPT1-associated PP1cβ readily bound immobilized microcystin-LR, an active-site inhibitor of PP1c. By contrast, TIMAP-associated PP1cβ did not interact with microcystin-LR, indicating that the active site of PP1cβ is blocked when it is bound to TIMAP. Thus, TIMAP inhibits myosin phosphatase activity in ECs by competing with MYPT1 for PP1cβ and blocking the PP1cβ active site.
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Affiliation(s)
- Xin Wang
- Department of Medicine, University of Alberta, Edmonton, Alberta T6G 2G3, Canada
| | - Marya Obeidat
- Department of Medicine, University of Alberta, Edmonton, Alberta T6G 2G3, Canada
| | - Laiji Li
- Department of Medicine, University of Alberta, Edmonton, Alberta T6G 2G3, Canada
| | - Phuwadet Pasarj
- Department of Biochemistry, University of Alberta, Edmonton, Alberta T6G 2G3, Canada
| | - Salah Aburahess
- Department of Medicine, University of Alberta, Edmonton, Alberta T6G 2G3, Canada
| | - Charles F B Holmes
- Department of Biochemistry, University of Alberta, Edmonton, Alberta T6G 2G3, Canada
| | - Barbara J Ballermann
- Department of Medicine, University of Alberta, Edmonton, Alberta T6G 2G3, Canada.
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89
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A three-step approach identifies novel shear stress-sensitive endothelial microRNAs involved in vasculoprotective effects of high-intensity interval training (HIIT). Oncotarget 2019. [DOI: 10.18632/oncotarget.26944] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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90
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Schmitz B, Breulmann FL, Jubran B, Rolfes F, Thorwesten L, Krüger M, Klose A, Schnittler HJ, Brand SM. A three-step approach identifies novel shear stress-sensitive endothelial microRNAs involved in vasculoprotective effects of high-intensity interval training (HIIT). Oncotarget 2019; 10:3625-3640. [PMID: 31217898 PMCID: PMC6557206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2018] [Accepted: 04/03/2019] [Indexed: 11/22/2022] Open
Abstract
Circulatory microRNAs (c-miRNAs) are regulated in response to physical activity and may exert anti-atherosclerotic effects. Since the vascular endothelium is an abundant source of c-miRNAs, we aimed to identify novel vasculoprotective exercise-induced c-miRNAs by the combined analysis of published endothelial miRNA array data followed by in vivo and in vitro validation. We identified 8 different array-based publications reporting 185 endothelial shear stress-regulated miRNAs of which 13 were identified in ≥3 independent reports. Nine miRNAs had already been associated with physical activity. Of the remaining novel miRNAs, miR-98-3p and miR-125-5p were selected for further analysis due to reported vasculoprotective effects. Analysis in two different 4-week high-intensity interval training (HIIT) groups (group 1 [n=27]: 4x30 s, group 2 [n=25]: 8x15 s; all-out running) suggested significantly elevated miR-98 and miR-125a-5p levels in response to acute exercise at baseline and at follow-up. Endothelial in vitro shear stress experiments revealed increased miR-125a-5p and miR-98-3p levels in medium of human umbilical vein endothelial cells at 30 dyn/cm2 after 20 and 60 min, respectively. Our results suggest that miR-98-3p and miR-125a-5p can be rapidly secreted by endothelial cells, which might be the source of increased c-miR-98-3p and -125a-5p levels in response to HIIT. Both miRNAs attenuate endothelial inflammation and may mediate vasculoprotective effects of physical exercise including HIIT.
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Affiliation(s)
- Boris Schmitz
- 1 Institute of Sports Medicine, Molecular Genetics of Cardiovascular Disease, University Hospital Muenster, Muenster, Germany
| | - Franziska L. Breulmann
- 1 Institute of Sports Medicine, Molecular Genetics of Cardiovascular Disease, University Hospital Muenster, Muenster, Germany
| | - Bothaynah Jubran
- 2 Institute of Anatomy and Vascular Biology, University of Muenster, Muenster, Germany
| | - Florian Rolfes
- 1 Institute of Sports Medicine, Molecular Genetics of Cardiovascular Disease, University Hospital Muenster, Muenster, Germany
| | - Lothar Thorwesten
- 1 Institute of Sports Medicine, Molecular Genetics of Cardiovascular Disease, University Hospital Muenster, Muenster, Germany
| | - Michael Krüger
- 3 Department of Physical Education and Sports History, University of Muenster, Muenster, Germany
| | - Andreas Klose
- 3 Department of Physical Education and Sports History, University of Muenster, Muenster, Germany
| | | | - Stefan-Martin Brand
- 1 Institute of Sports Medicine, Molecular Genetics of Cardiovascular Disease, University Hospital Muenster, Muenster, Germany
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91
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Yin X, Lin X, Ren X, Yu B, Liu L, Ye Z, Chen Q, Lee C, Lu W, Yu D, Li X. Novel multi-targeted inhibitors suppress ocular neovascularization by regulating unique gene sets. Pharmacol Res 2019; 146:104277. [PMID: 31112749 DOI: 10.1016/j.phrs.2019.104277] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2019] [Revised: 04/16/2019] [Accepted: 05/16/2019] [Indexed: 12/24/2022]
Abstract
Neovascular diseases, such as many cancers and ocular disorders, are life threatening and devastating. Although anti-vascular endothelial growth factor A (VEGF-A) therapy is available, many patients are not responsive and drug resistance can develop. To try to overcome these problems, combination therapy targeting VEGF-A and platelet-derived growth factor B (PDGF-B) was tested. However, one obvious drawback was that the other VEGF and PDGF family members were not inhibited and therefore could compensate. Indeed, this was, at least to some extent, demonstrated by the disappointing outcomes. To this end, we designed novel multi-targeted inhibitors that can block most of the VEGF and PDGF family members simultaneously by making a fusion protein containing the ligand-binding domains of vascular endothelial growth factor receptor 1 (VEGFR1), vascular endothelial growth factor receptor 2 (VEGFR2) and platelet-derived growth factor receptor beta (PDGFRβ), which can therefore act as a decoy blocker for most of the VEGF and PDGF family members. Indeed, in cultured cells, the novel inhibitors suppressed the migration and proliferation of both vascular endothelial cells and smooth muscle cells, and abolished VEGFR2 and PDGFRβ activation. Importantly, in a choroidal neovascularization model in vivo, the novel inhibitor inhibited ocular neovascularization more efficiently than the mono-inhibitors against VEGFR or PDGFR alone respectively. Mechanistically, a genome-wide microarray analysis unveiled that the novel inhibitor regulated unique sets of genes that were not regulated by the mono-inhibitors, further demonstrating the functional uniqueness and superiority of the novel inhibitor. Together, we show that the multi-targeted inhibitors that can block VEGFR1, VEGFR2 and PDGFRβ simultaneously suppress pathological angiogenesis more efficiently than monotherapy, and may therefore have promising therapeutic value for the treatment of neovascular diseases.
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Affiliation(s)
- Xiangke Yin
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, 510060, PR China
| | - Xianchai Lin
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, 510060, PR China
| | - Xiangrong Ren
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, 510060, PR China
| | - Bo Yu
- Larix Bioscience LLC, 1230 Bordeaux Drive, Sunnyvale, CA, 94089, USA
| | - Lixian Liu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, 510060, PR China
| | - Zhimin Ye
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, 510060, PR China
| | - Qishan Chen
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, 510060, PR China
| | - Chunsik Lee
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, 510060, PR China
| | - Weisi Lu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, 510060, PR China.
| | - Dechao Yu
- Innovent Biologics, Inc., 168 Dongping Street, Suzhou Industrial Park, 215123, PR China.
| | - Xuri Li
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, 510060, PR China.
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92
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Colás-Algora N, Millán J. How many cadherins do human endothelial cells express? Cell Mol Life Sci 2019; 76:1299-1317. [PMID: 30552441 PMCID: PMC11105309 DOI: 10.1007/s00018-018-2991-9] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Revised: 11/16/2018] [Accepted: 12/06/2018] [Indexed: 12/13/2022]
Abstract
The vasculature is the paradigm of a compartment generated by parallel cellular barriers that aims to transport oxygen, nutrients and immune cells in complex organisms. Vascular barrier dysfunction leads to fatal acute and chronic inflammatory diseases. The endothelial barrier lines the inner side of vessels and is the main regulator of vascular permeability. Cadherins comprise a superfamily of 114 calcium-dependent adhesion proteins that contain conserved cadherin motifs and form cell-cell junctions in metazoans. In mature human endothelial cells, only VE (vascular endothelial)-cadherin and N (neural)-cadherin have been investigated in detail. Although both cadherins are essential for regulating endothelial permeability, no comprehensive expression studies to identify which other family members could play a relevant role in endothelial cells has so far been performed. Here, we have reviewed gene and protein expression databases to analyze cadherin expression in mature human endothelium and found that at least 24 cadherin superfamily members are significantly expressed. Based on data obtained from other cell types, organisms and experimental models, we discuss their potential functions, many of them unrelated to the formation of endothelial cell-cell junctions. The expression of this new set of endothelial cadherins highlights the important but still poorly defined roles of planar cell polarity, the Hippo pathway and mitochondria metabolism in human vascular homeostasis.
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Affiliation(s)
- Natalia Colás-Algora
- Centro de Biología Molecular Severo Ochoa, Consejo Superior de Investigaciones Científicas, Universidad Autónoma de Madrid, C/Nicolás Cabrera 1, Cantoblanco, 28049, Madrid, Spain
| | - Jaime Millán
- Centro de Biología Molecular Severo Ochoa, Consejo Superior de Investigaciones Científicas, Universidad Autónoma de Madrid, C/Nicolás Cabrera 1, Cantoblanco, 28049, Madrid, Spain.
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93
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Klusmeier N, Schnittler HJ, Seebach J. A Novel Microscopic Assay Reveals Heterogeneous Regulation of Local Endothelial Barrier Function. Biophys J 2019; 116:1547-1559. [PMID: 30878197 DOI: 10.1016/j.bpj.2019.02.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Revised: 02/11/2019] [Accepted: 02/13/2019] [Indexed: 12/27/2022] Open
Abstract
Blood vessels are covered with endothelial cells on their inner surfaces, forming a selective and semipermeable barrier between the blood and the underlying tissue. Many pathological processes, such as inflammation or cancer metastasis, are accompanied by an increased vascular permeability. Progress in live cell imaging techniques has recently revealed that the structure of endothelial cell contacts is constantly reorganized and that endothelial junctions display high heterogeneities at a subcellular level even within one cell. Although it is assumed that this dynamic remodeling is associated with a local change in endothelial barrier function, a direct proof is missing mainly because of a lack of appropriate experimental techniques. Here, we describe a new assay to dynamically measure local endothelial barrier function with a lateral resolution of ∼15 μm and a temporal resolution of 1 min. In this setup, fluorescence-labeled molecules are added to the apical compartment of an endothelial monolayer, and the penetration of molecules from the apical to the basal compartment is recorded by total internal reflection fluorescence microscopy utilizing the generated evanescent field. With this technique, we found a remarkable heterogeneity in the local permeability for albumin within confluent endothelial cell layers. In regions with low permeability, stimulation with the proinflammatory agent histamine results in a transient increase in paracellular permeability. The effect showed a high variability along the contact of one individual cell, indicating a local regulation of endothelial barrier function. In regions with high basal permeability, histamine had no obvious effect. In contrast, the barrier-enhancing drug forskolin reduces the permeability for albumin and dextran uniformly along the cell junctions. Because this new approach can be readily combined with other live cell imaging techniques, it will contribute to a better understanding of the mechanisms underlying subcellular junctional reorganization during wound healing, inflammation, and angiogenesis.
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Affiliation(s)
- Nadine Klusmeier
- Institute of Anatomy and Vascular Biology, Westfälische Wilhelms-Universität Münster, Münster, Germany
| | - Hans-Joachim Schnittler
- Institute of Anatomy and Vascular Biology, Westfälische Wilhelms-Universität Münster, Münster, Germany
| | - Jochen Seebach
- Institute of Anatomy and Vascular Biology, Westfälische Wilhelms-Universität Münster, Münster, Germany.
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94
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The Functional Implications of Endothelial Gap Junctions and Cellular Mechanics in Vascular Angiogenesis. Cancers (Basel) 2019; 11:cancers11020237. [PMID: 30781714 PMCID: PMC6406946 DOI: 10.3390/cancers11020237] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2018] [Revised: 02/08/2019] [Accepted: 02/13/2019] [Indexed: 12/27/2022] Open
Abstract
Angiogenesis—the sprouting and growth of new blood vessels from the existing vasculature—is an important contributor to tumor development, since it facilitates the supply of oxygen and nutrients to cancer cells. Endothelial cells are critically affected during the angiogenic process as their proliferation, motility, and morphology are modulated by pro-angiogenic and environmental factors associated with tumor tissues and cancer cells. Recent in vivo and in vitro studies have revealed that the gap junctions of endothelial cells also participate in the promotion of angiogenesis. Pro-angiogenic factors modulate gap junction function and connexin expression in endothelial cells, whereas endothelial connexins are involved in angiogenic tube formation and in the cell migration of endothelial cells. Several mechanisms, including gap junction function-dependent or -independent pathways, have been proposed. In particular, connexins might have the potential to regulate cell mechanics such as cell morphology, cell migration, and cellular stiffness that are dynamically changed during the angiogenic processes. Here, we review the implication for endothelial gap junctions and cellular mechanics in vascular angiogenesis.
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95
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Rezaei M, Martins Cavaco AC, Seebach J, Niland S, Zimmermann J, Hanschmann EM, Hallmann R, Schillers H, Eble JA. Signals of the Neuropilin-1–MET Axis and Cues of Mechanical Force Exertion Converge to Elicit Inflammatory Activation in Coherent Endothelial Cells. THE JOURNAL OF IMMUNOLOGY 2019; 202:1559-1572. [DOI: 10.4049/jimmunol.1801346] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Accepted: 12/27/2018] [Indexed: 12/31/2022]
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96
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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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97
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Cao J, Schnittler H. Putting VE-cadherin into JAIL for junction remodeling. J Cell Sci 2019; 132:132/1/jcs222893. [DOI: 10.1242/jcs.222893] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
ABSTRACT
Junction dynamics of endothelial cells are based on the integration of signal transduction, cytoskeletal remodeling and contraction, which are necessary for the formation and maintenance of monolayer integrity, but also enable repair and regeneration. The VE-cadherin–catenin complex forms the molecular basis of the adherence junctions and cooperates closely with actin filaments. Several groups have recently described small actin-driven protrusions at the cell junctions that are controlled by the Arp2/3 complex, contributing to cell junction regulation. We identified these protrusions as the driving force for VE-cadherin dynamics, as they directly induce new VE-cadherin-mediated adhesion sites, and have accordingly referred to these structures as junction-associated intermittent lamellipodia (JAIL). JAIL extend over only a few microns and thus provide the basis for a subcellular regulation of adhesion. The local (subcellular) VE-cadherin concentration and JAIL formation are directly interdependent, which enables autoregulation. Therefore, this mechanism can contribute a subcellularly regulated adaptation of cell contact dynamics, and is therefore of great importance for monolayer integrity and relative cell migration during wound healing and angiogenesis, as well as for inflammatory responses. In this Review, we discuss the mechanisms and functions underlying these actin-driven protrusions and consider their contribution to the dynamic regulation of endothelial cell junctions.
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Affiliation(s)
- Jiahui Cao
- Institute of Anatomy and Vascular Biology, Westfälische Wilhelms-Universität Münster, Münster Germany
| | - Hans Schnittler
- Institute of Anatomy and Vascular Biology, Westfälische Wilhelms-Universität Münster, Münster Germany
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98
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Kotini MP, Mäe MA, Belting HG, Betsholtz C, Affolter M. Sprouting and anastomosis in the Drosophila trachea and the vertebrate vasculature: Similarities and differences in cell behaviour. Vascul Pharmacol 2019; 112:8-16. [DOI: 10.1016/j.vph.2018.11.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Revised: 08/21/2018] [Accepted: 11/02/2018] [Indexed: 01/25/2023]
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99
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Wu H, Ding J, Li S, Lin J, Jiang R, Lin C, Dai L, Xie C, Lin D, Xu H, Gao W, Zhou K. Metformin Promotes the Survival of Random-Pattern Skin Flaps by Inducing Autophagy via the AMPK-mTOR-TFEB signaling pathway. Int J Biol Sci 2019; 15:325-340. [PMID: 30745824 PMCID: PMC6367544 DOI: 10.7150/ijbs.29009] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2018] [Accepted: 11/30/2018] [Indexed: 02/07/2023] Open
Abstract
Random-pattern skin flaps are widely used to close defects in reconstructive and plastic surgeries; however, they are vulnerable to necrosis, particularly in the distal portion of the flap. Here, we examined the effects of metformin on flap survival and the mechanisms underlying these effects. Following metformin treatment, the survival area, blood flow, and number of microvessels present in skin flaps were increased on postoperative day 7, whereas tissue edema was reduced. In addition, metformin promoted angiogenesis, inhibited apoptosis, relieved oxidative stress, and increased autophagy in areas of ischemia; these effects were reversed by autophagy inhibitors 3-methyladenine (3MA) or chloroquine (CQ). Either 3MA or CQ reversed the metformin-induced increase in flap viability. Moreover, metformin also activated the AMPK-mTOR-TFEB signaling pathway in ischemic areas. Inhibitions of AMPK via Compound C (CC) or AMPK shRNA adeno-associated virus (AAV) vector resulted in the downregulation of the AMPK-mTOR-TFEB signaling pathway and autophagy level in metformin-treated flaps. Taken together, our findings suggest that metformin improves the survival of random-pattern skin flaps by enhancing angiogenesis and suppressing apoptosis and oxidative stress. These effects result from increased autophagy mediated by activation of the AMPK-mTOR-TFEB signaling pathway.
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Affiliation(s)
- Hongqiang Wu
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China.,Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China.,The Second Clinical Medical College of Wenzhou Medical University, Wenzhou 325027, China
| | - Jian Ding
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China.,Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China.,The Second Clinical Medical College of Wenzhou Medical University, Wenzhou 325027, China
| | - Shihen Li
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China.,Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China.,The Second Clinical Medical College of Wenzhou Medical University, Wenzhou 325027, China
| | - Jinti Lin
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China.,Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China.,The Second Clinical Medical College of Wenzhou Medical University, Wenzhou 325027, China
| | - Renhao Jiang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China.,Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China.,The Second Clinical Medical College of Wenzhou Medical University, Wenzhou 325027, China
| | - Chen Lin
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China.,Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China.,The Second Clinical Medical College of Wenzhou Medical University, Wenzhou 325027, China
| | - Li Dai
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China.,Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China.,The Second Clinical Medical College of Wenzhou Medical University, Wenzhou 325027, China
| | - Chenglong Xie
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China.,Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China.,The Second Clinical Medical College of Wenzhou Medical University, Wenzhou 325027, China
| | - Dingsheng Lin
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China.,Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China.,The Second Clinical Medical College of Wenzhou Medical University, Wenzhou 325027, China
| | - Huazi Xu
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China.,Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China.,The Second Clinical Medical College of Wenzhou Medical University, Wenzhou 325027, China
| | - Weiyang Gao
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China.,Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China.,The Second Clinical Medical College of Wenzhou Medical University, Wenzhou 325027, China
| | - Kailiang Zhou
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China.,Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China.,The Second Clinical Medical College of Wenzhou Medical University, Wenzhou 325027, China
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100
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Hofer I, Schimp C, Taha M, Seebach J, Aldirawi M, Cao J, Leidl Q, Ahle A, Schnittler H. Advanced Methods for the Investigation of Cell Contact Dynamics in Endothelial Cells Using Florescence-Based Live Cell Imaging. J Vasc Res 2018; 55:350-364. [DOI: 10.1159/000494933] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Accepted: 10/29/2018] [Indexed: 11/19/2022] Open
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