1
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Ristori T, Thuret R, Hooker E, Quicke P, Lanthier K, Ntumba K, Aspalter IM, Uroz M, Herbert SP, Chen CS, Larrivée B, Bentley K. Bmp9 regulates Notch signaling and the temporal dynamics of angiogenesis via Lunatic Fringe. bioRxiv 2023:2023.09.25.557123. [PMID: 37808725 PMCID: PMC10557600 DOI: 10.1101/2023.09.25.557123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/10/2023]
Abstract
In brief The mechanisms regulating the signaling pathways involved in angiogenesis are not fully known. Ristori et al. show that Lunatic Fringe (LFng) mediates the crosstalk between Bone Morphogenic Protein 9 (Bmp9) and Notch signaling, thereby regulating the endothelial cell behavior and temporal dynamics of their identity during sprouting angiogenesis. Highlights Bmp9 upregulates the expression of LFng in endothelial cells.LFng regulates the temporal dynamics of tip/stalk selection and rearrangement.LFng indicated to play a role in hereditary hemorrhagic telangiectasia.Bmp9 and LFng mediate the endothelial cell-pericyte crosstalk.Bone Morphogenic Protein 9 (Bmp9), whose signaling through Activin receptor-like kinase 1 (Alk1) is involved in several diseases, has been shown to independently activate Notch target genes in an additive fashion with canonical Notch signaling. Here, by integrating predictive computational modeling validated with experiments, we uncover that Bmp9 upregulates Lunatic Fringe (LFng) in endothelial cells (ECs), and thereby also regulates Notch activity in an inter-dependent, multiplicative fashion. Specifically, the Bmp9-upregulated LFng enhances Notch receptor activity creating a much stronger effect when Dll4 ligands are also present. During sprouting, this LFng regulation alters vessel branching by modulating the timing of EC phenotype selection and rearrangement. Our results further indicate that LFng can play a role in Bmp9-related diseases and in pericyte-driven vessel stabilization, since we find LFng contributes to Jag1 upregulation in Bmp9-stimulated ECs; thus, Bmp9-upregulated LFng results in not only enhanced EC Dll4-Notch1 activation, but also Jag1-Notch3 activation in pericytes.
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2
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Yanagida A, Corujo-Simon E, Revell CK, Sahu P, Stirparo GG, Aspalter IM, Winkel AK, Peters R, De Belly H, Cassani DA, Achouri S, Blumenfeld R, Franze K, Hannezo E, Paluch EK, Nichols J, Chalut KJ. Cell surface fluctuations regulate early embryonic lineage sorting. Cell 2022; 185:1258. [PMID: 35364033 PMCID: PMC8970287 DOI: 10.1016/j.cell.2022.03.015] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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3
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Yanagida A, Corujo-Simon E, Revell CK, Sahu P, Stirparo GG, Aspalter IM, Winkel AK, Peters R, De Belly H, Cassani DAD, Achouri S, Blumenfeld R, Franze K, Hannezo E, Paluch EK, Nichols J, Chalut KJ. Cell surface fluctuations regulate early embryonic lineage sorting. Cell 2022; 185:777-793.e20. [PMID: 35196500 PMCID: PMC8896887 DOI: 10.1016/j.cell.2022.01.022] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Revised: 10/22/2021] [Accepted: 01/26/2022] [Indexed: 01/24/2023]
Abstract
In development, lineage segregation is coordinated in time and space. An important example is the mammalian inner cell mass, in which the primitive endoderm (PrE, founder of the yolk sac) physically segregates from the epiblast (EPI, founder of the fetus). While the molecular requirements have been well studied, the physical mechanisms determining spatial segregation between EPI and PrE remain elusive. Here, we investigate the mechanical basis of EPI and PrE sorting. We find that rather than the differences in static cell surface mechanical parameters as in classical sorting models, it is the differences in surface fluctuations that robustly ensure physical lineage sorting. These differential surface fluctuations systematically correlate with differential cellular fluidity, which we propose together constitute a non-equilibrium sorting mechanism for EPI and PrE lineages. By combining experiments and modeling, we identify cell surface dynamics as a key factor orchestrating the correct spatial segregation of the founder embryonic lineages.
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Affiliation(s)
- Ayaka Yanagida
- Wellcome-MRC Cambridge Stem Cell Institute, Jeffrey Cheah Biomedical Centre, University of Cambridge, Puddicombe Way, Cambridge CB2 0AW, UK; Centre for Trophoblast Research, University of Cambridge, Downing Street, Cambridge CB2 3EG, UK; Living Systems Institute, University of Exeter, Exeter EX4 4QD, UK
| | - Elena Corujo-Simon
- Wellcome-MRC Cambridge Stem Cell Institute, Jeffrey Cheah Biomedical Centre, University of Cambridge, Puddicombe Way, Cambridge CB2 0AW, UK
| | - Christopher K Revell
- Cavendish Laboratory, Department of Physics, University of Cambridge, JJ Thomson Ave, Cambridge CB3 0HE, UK
| | - Preeti Sahu
- Institute of Science and Technology Austria, Am Campus 1, Klosterneuburg 3400, Austria
| | - Giuliano G Stirparo
- Wellcome-MRC Cambridge Stem Cell Institute, Jeffrey Cheah Biomedical Centre, University of Cambridge, Puddicombe Way, Cambridge CB2 0AW, UK
| | - Irene M Aspalter
- MRC Laboratory for Molecular Cell Biology, University College London, London WC1E 6BT, UK
| | - Alex K Winkel
- Department of Physiology, Development and Neuroscience, University of Cambridge, Downing Street, Cambridge CB2 3DY, UK
| | - Ruby Peters
- Department of Physiology, Development and Neuroscience, University of Cambridge, Downing Street, Cambridge CB2 3DY, UK
| | - Henry De Belly
- Wellcome-MRC Cambridge Stem Cell Institute, Jeffrey Cheah Biomedical Centre, University of Cambridge, Puddicombe Way, Cambridge CB2 0AW, UK; MRC Laboratory for Molecular Cell Biology, University College London, London WC1E 6BT, UK; Department of Physiology, Development and Neuroscience, University of Cambridge, Downing Street, Cambridge CB2 3DY, UK
| | - Davide A D Cassani
- MRC Laboratory for Molecular Cell Biology, University College London, London WC1E 6BT, UK
| | - Sarra Achouri
- Wellcome-MRC Cambridge Stem Cell Institute, Jeffrey Cheah Biomedical Centre, University of Cambridge, Puddicombe Way, Cambridge CB2 0AW, UK; Centre for Trophoblast Research, University of Cambridge, Downing Street, Cambridge CB2 3EG, UK
| | - Raphael Blumenfeld
- Gonville & Caius College, University of Cambridge, Trinity St., Cambridge CB2 1TA, UK
| | - Kristian Franze
- Department of Physiology, Development and Neuroscience, University of Cambridge, Downing Street, Cambridge CB2 3DY, UK
| | - Edouard Hannezo
- Institute of Science and Technology Austria, Am Campus 1, Klosterneuburg 3400, Austria
| | - Ewa K Paluch
- MRC Laboratory for Molecular Cell Biology, University College London, London WC1E 6BT, UK; Department of Physiology, Development and Neuroscience, University of Cambridge, Downing Street, Cambridge CB2 3DY, UK.
| | - Jennifer Nichols
- Wellcome-MRC Cambridge Stem Cell Institute, Jeffrey Cheah Biomedical Centre, University of Cambridge, Puddicombe Way, Cambridge CB2 0AW, UK; Centre for Trophoblast Research, University of Cambridge, Downing Street, Cambridge CB2 3EG, UK; Department of Physiology, Development and Neuroscience, University of Cambridge, Downing Street, Cambridge CB2 3DY, UK.
| | - Kevin J Chalut
- Wellcome-MRC Cambridge Stem Cell Institute, Jeffrey Cheah Biomedical Centre, University of Cambridge, Puddicombe Way, Cambridge CB2 0AW, UK; Department of Physiology, Development and Neuroscience, University of Cambridge, Downing Street, Cambridge CB2 3DY, UK.
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4
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Zakirov B, Charalambous G, Thuret R, Aspalter IM, Van-Vuuren K, Mead T, Harrington K, Regan ER, Herbert SP, Bentley K. Active perception during angiogenesis: filopodia speed up Notch selection of tip cells in silico and in vivo. Philos Trans R Soc Lond B Biol Sci 2021; 376:20190753. [PMID: 33550953 PMCID: PMC7934951 DOI: 10.1098/rstb.2019.0753] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/10/2020] [Indexed: 12/19/2022] Open
Abstract
How do cells make efficient collective decisions during tissue morphogenesis? Humans and other organisms use feedback between movement and sensing known as 'sensorimotor coordination' or 'active perception' to inform behaviour, but active perception has not before been investigated at a cellular level within organs. Here we provide the first proof of concept in silico/in vivo study demonstrating that filopodia (actin-rich, dynamic, finger-like cell membrane protrusions) play an unexpected role in speeding up collective endothelial decisions during the time-constrained process of 'tip cell' selection during blood vessel formation (angiogenesis). We first validate simulation predictions in vivo with live imaging of zebrafish intersegmental vessel growth. Further simulation studies then indicate the effect is due to the coupled positive feedback between movement and sensing on filopodia conferring a bistable switch-like property to Notch lateral inhibition, ensuring tip selection is a rapid and robust process. We then employ measures from computational neuroscience to assess whether filopodia function as a primitive (basal) form of active perception and find evidence in support. By viewing cell behaviour through the 'basal cognitive lens' we acquire a fresh perspective on the tip cell selection process, revealing a hidden, yet vital time-keeping role for filopodia. Finally, we discuss a myriad of new and exciting research directions stemming from our conceptual approach to interpreting cell behaviour. This article is part of the theme issue 'Basal cognition: multicellularity, neurons and the cognitive lens'.
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Affiliation(s)
- Bahti Zakirov
- Cellular Adaptive Behaviour Lab, Francis Crick Institute, London, NW1 1AT, UK
- Department of Informatics, King's College London, London, UK
| | - Georgios Charalambous
- Division of Developmental Biology and Medicine, University of Manchester, Manchester, UK
| | - Raphael Thuret
- Division of Developmental Biology and Medicine, University of Manchester, Manchester, UK
| | - Irene M. Aspalter
- Cellular Adaptive Behaviour Lab, Francis Crick Institute, London, NW1 1AT, UK
| | - Kelvin Van-Vuuren
- Cellular Adaptive Behaviour Lab, Francis Crick Institute, London, NW1 1AT, UK
| | - Thomas Mead
- Cellular Adaptive Behaviour Lab, Francis Crick Institute, London, NW1 1AT, UK
- Department of Informatics, King's College London, London, UK
| | - Kyle Harrington
- Virtual Technology and Design, University of Idaho, Moscow, ID, USA
- Center for Vascular Biology Research, Beth Israel Deaconess Medical Center, Department of Pathology, Harvard Medical School, Boston, MA, USA
| | - Erzsébet Ravasz Regan
- Center for Vascular Biology Research, Beth Israel Deaconess Medical Center, Department of Pathology, Harvard Medical School, Boston, MA, USA
- Department of Biology, The College of Wooster, Wooster, OH, USA
| | - Shane Paul Herbert
- Division of Developmental Biology and Medicine, University of Manchester, Manchester, UK
| | - Katie Bentley
- Cellular Adaptive Behaviour Lab, Francis Crick Institute, London, NW1 1AT, UK
- Department of Informatics, King's College London, London, UK
- Center for Vascular Biology Research, Beth Israel Deaconess Medical Center, Department of Pathology, Harvard Medical School, Boston, MA, USA
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5
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Nedvetsky PI, Zhao X, Mathivet T, Aspalter IM, Stanchi F, Metzger RJ, Mostov KE, Gerhardt H. cAMP-dependent protein kinase A (PKA) regulates angiogenesis by modulating tip cell behavior in a Notch-independent manner. Development 2017; 143:3582-3590. [PMID: 27702786 DOI: 10.1242/dev.134767] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Accepted: 08/08/2016] [Indexed: 01/06/2023]
Abstract
cAMP-dependent protein kinase A (PKA) is a ubiquitously expressed serine/threonine kinase that regulates a variety of cellular functions. Here, we demonstrate that endothelial PKA activity is essential for vascular development, specifically regulating the transition from sprouting to stabilization of nascent vessels. Inhibition of endothelial PKA by endothelial cell-specific expression of dominant-negative PKA in mice led to perturbed vascular development, hemorrhage and embryonic lethality at mid-gestation. During perinatal retinal angiogenesis, inhibition of PKA resulted in hypersprouting as a result of increased numbers of tip cells. In zebrafish, cell autonomous PKA inhibition also increased and sustained endothelial cell motility, driving cells to become tip cells. Although these effects of PKA inhibition were highly reminiscent of Notch inhibition effects, our data demonstrate that PKA and Notch independently regulate tip and stalk cell formation and behavior.
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Affiliation(s)
- Pavel I Nedvetsky
- Vascular Patterning Laboratory, Vesalius Research Center, VIB, Leuven, Belgium Vascular Patterning Laboratory, Vesalius Research Center, Department of Oncology, KU Leuven, Leuven, Belgium
| | - Xiaocheng Zhao
- Vascular Patterning Laboratory, Vesalius Research Center, VIB, Leuven, Belgium Vascular Patterning Laboratory, Vesalius Research Center, Department of Oncology, KU Leuven, Leuven, Belgium
| | - Thomas Mathivet
- Vascular Patterning Laboratory, Vesalius Research Center, VIB, Leuven, Belgium Vascular Patterning Laboratory, Vesalius Research Center, Department of Oncology, KU Leuven, Leuven, Belgium
| | - Irene M Aspalter
- Vascular Biology Laboratory, London Research Institute - Cancer Research UK, Lincoln's Inn Fields Laboratories, 44 Lincoln's Inn Fields, London WC2A 3LY, UK
| | - Fabio Stanchi
- Vascular Patterning Laboratory, Vesalius Research Center, VIB, Leuven, Belgium Vascular Patterning Laboratory, Vesalius Research Center, Department of Oncology, KU Leuven, Leuven, Belgium
| | - Ross J Metzger
- Department of Anatomy, University of California San Francisco, Genentech Hall, 600 16th Street, San Francisco, CA 94143-2140, USA
| | - Keith E Mostov
- Department of Anatomy, University of California San Francisco, Genentech Hall, 600 16th Street, San Francisco, CA 94143-2140, USA
| | - Holger Gerhardt
- Vascular Patterning Laboratory, Vesalius Research Center, VIB, Leuven, Belgium Vascular Patterning Laboratory, Vesalius Research Center, Department of Oncology, KU Leuven, Leuven, Belgium Vascular Biology Laboratory, London Research Institute - Cancer Research UK, Lincoln's Inn Fields Laboratories, 44 Lincoln's Inn Fields, London WC2A 3LY, UK Integrative Vascular Biology Lab, Max-Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), Robert-Rössle-Strasse 10, Berlin 13125, Germany DZHK (German Center for Cardiovascular Research), partner site Berlin Berlin Institute of Health (BIH), Berlin, Germany
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6
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Abstract
Cell migration is central to a multitude of physiological processes, including embryonic development, immune surveillance, and wound healing, and deregulated migration is key to cancer dissemination. Decades of investigations have uncovered many of the molecular and physical mechanisms underlying cell migration. Together with protrusion extension and cell body retraction, adhesion to the substrate via specific focal adhesion points has long been considered an essential step in cell migration. Although this is true for cells moving on two-dimensional substrates, recent studies have demonstrated that focal adhesions are not required for cells moving in three dimensions, in which confinement is sufficient to maintain a cell in contact with its substrate. Here, we review the investigations that have led to challenging the requirement of specific adhesions for migration, discuss the physical mechanisms proposed for cell body translocation during focal adhesion-independent migration, and highlight the remaining open questions for the future.
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Affiliation(s)
- Ewa K Paluch
- MRC Laboratory for Molecular Cell Biology, University College London, London, United Kingdom WC1E 6BT; .,Institute for the Physics of Living Systems, University College London, London, United Kingdom, WC1E 6BT
| | - Irene M Aspalter
- MRC Laboratory for Molecular Cell Biology, University College London, London, United Kingdom WC1E 6BT; .,Institute for the Physics of Living Systems, University College London, London, United Kingdom, WC1E 6BT
| | - Michael Sixt
- Institute of Science and Technology Austria (IST Austria), 3400 Klosterneuburg, Austria
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7
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Wilhelm K, Happel K, Eelen G, Schoors S, Oellerich MF, Lim R, Zimmermann B, Aspalter IM, Franco CA, Boettger T, Braun T, Fruttiger M, Rajewsky K, Keller C, Brüning JC, Gerhardt H, Carmeliet P, Potente M. FOXO1 couples metabolic activity and growth state in the vascular endothelium. Nature 2016; 529:216-20. [PMID: 26735015 PMCID: PMC5380221 DOI: 10.1038/nature16498] [Citation(s) in RCA: 377] [Impact Index Per Article: 47.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Accepted: 11/27/2015] [Indexed: 12/27/2022]
Abstract
Endothelial cells (ECs) are plastic cells that can switch between growth states with different bioenergetic and biosynthetic requirements1. Although quiescent in most healthy tissues, ECs divide and migrate rapidly upon proangiogenic stimulation2,3. Adjusting endothelial metabolism to growth state is central to normal vessel growth and function1,4, yet poorly understood at the molecular level. Here we report that the forkhead box O (FOXO) transcription factor FOXO1 is an essential regulator of vascular growth that couples metabolic and proliferative activities in ECs. Endothelial-restricted deletion of FOXO1 in mice induces a profound increase in EC proliferation that interferes with coordinated sprouting, thereby causing hyperplasia and vessel enlargement. Conversely, forced expression of FOXO1 restricts vascular expansion and leads to vessel thinning and hypobranching. We find that FOXO1 acts as a gatekeeper of endothelial quiescence, which decelerates metabolic activity by reducing glycolysis and mitochondrial respiration. Mechanistically, FOXO1 suppresses signalling by c-MYC (termed MYC hereafter), a powerful driver of anabolic metabolism and growth5,6. MYC ablation impairs glycolysis, mitochondrial function and proliferation of ECs while its EC-specific overexpression fuels these processes. Moreover, restoration of MYC signalling in FOXO1-overexpressing endothelium normalises metabolic activity and branching behaviour. Our findings identify FOXO1 as a critical rheostat of vascular expansion and define the FOXO1 – MYC transcriptional network as a novel metabolic checkpoint during endothelial growth and proliferation.
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Affiliation(s)
- Kerstin Wilhelm
- Angiogenesis &Metabolism Laboratory, Max Planck Institute for Heart and Lung Research, D-61231 Bad Nauheim, Germany
| | - Katharina Happel
- Angiogenesis &Metabolism Laboratory, Max Planck Institute for Heart and Lung Research, D-61231 Bad Nauheim, Germany
| | - Guy Eelen
- Laboratory of Angiogenesis and Neurovascular Link, Vesalius Research Center, Department of Oncology, University of Leuven, Leuven 3000, Belgium.,Laboratory of Angiogenesis and Neurovascular Link, Vesalius Research Center, VIB, Leuven 3000, Belgium
| | - Sandra Schoors
- Laboratory of Angiogenesis and Neurovascular Link, Vesalius Research Center, Department of Oncology, University of Leuven, Leuven 3000, Belgium.,Laboratory of Angiogenesis and Neurovascular Link, Vesalius Research Center, VIB, Leuven 3000, Belgium
| | - Mark F Oellerich
- Angiogenesis &Metabolism Laboratory, Max Planck Institute for Heart and Lung Research, D-61231 Bad Nauheim, Germany
| | - Radiance Lim
- Angiogenesis &Metabolism Laboratory, Max Planck Institute for Heart and Lung Research, D-61231 Bad Nauheim, Germany
| | - Barbara Zimmermann
- Angiogenesis &Metabolism Laboratory, Max Planck Institute for Heart and Lung Research, D-61231 Bad Nauheim, Germany
| | - Irene M Aspalter
- Vascular Biology Laboratory, London Research Institute, Cancer Research UK, London WC2A 3LY, UK
| | - Claudio A Franco
- Vascular Morphogenesis Laboratory, Instituto de Medicina Molecular, Faculdade de Medicina da Universidade de Lisboa, Lisbon 1649-028, Portugal
| | - Thomas Boettger
- Department of Cardiac Development and Remodeling, Max Planck Institute for Heart and Lung Research, D-61231 Bad Nauheim, Germany
| | - Thomas Braun
- Department of Cardiac Development and Remodeling, Max Planck Institute for Heart and Lung Research, D-61231 Bad Nauheim, Germany
| | - Marcus Fruttiger
- UCL Institute of Ophthalmology, University College London, London EC1V 9EL, UK
| | - Klaus Rajewsky
- Max Delbrück Center for Molecular Medicine (MDC), D-13125 Berlin, Germany
| | - Charles Keller
- Children's Cancer Therapy Development Institute, Beaverton, Oregon 97005, USA
| | - Jens C Brüning
- Max Planck Institute for Metabolism Research, Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD) and Center of Molecular Medicine Cologne (CMMC), Center for Endocrinology, Diabetes and Preventive Medicine (CEDP), University of Cologne, D-50931 Cologne, Germany
| | - Holger Gerhardt
- Vascular Biology Laboratory, London Research Institute, Cancer Research UK, London WC2A 3LY, UK.,Max Delbrück Center for Molecular Medicine (MDC), D-13125 Berlin, Germany.,Vascular Patterning Laboratory, Vesalius Research Center, VIB and University of Leuven, Leuven 3000, Belgium.,DZHK (German Center for Cardiovascular Research), partner site Berlin, D-13347 Berlin, Germany.,Berlin Institute of Health (BIH), D-10117 Berlin, Germany
| | - Peter Carmeliet
- Laboratory of Angiogenesis and Neurovascular Link, Vesalius Research Center, Department of Oncology, University of Leuven, Leuven 3000, Belgium.,Laboratory of Angiogenesis and Neurovascular Link, Vesalius Research Center, VIB, Leuven 3000, Belgium
| | - Michael Potente
- Angiogenesis &Metabolism Laboratory, Max Planck Institute for Heart and Lung Research, D-61231 Bad Nauheim, Germany.,International Institute of Molecular and Cell Biology, 02-109 Warsaw, Poland.,DZHK (German Center for Cardiovascular Research), partner site Frankfurt Rhine-Main, D-13347 Berlin, Germany
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8
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Heinz LX, Baumann CL, Köberlin MS, Snijder B, Gawish R, Shui G, Sharif O, Aspalter IM, Müller AC, Kandasamy RK, Breitwieser FP, Pichlmair A, Bruckner M, Rebsamen M, Blüml S, Karonitsch T, Fauster A, Colinge J, Bennett KL, Knapp S, Wenk MR, Superti-Furga G. The Lipid-Modifying Enzyme SMPDL3B Negatively Regulates Innate Immunity. Cell Rep 2015; 11:1919-28. [PMID: 26095358 PMCID: PMC4508342 DOI: 10.1016/j.celrep.2015.05.006] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Revised: 03/23/2015] [Accepted: 05/01/2015] [Indexed: 12/26/2022] Open
Abstract
Lipid metabolism and receptor-mediated signaling are highly intertwined processes that cooperate to fulfill cellular functions and safeguard cellular homeostasis. Activation of Toll-like receptors (TLRs) leads to a complex cellular response, orchestrating a diverse range of inflammatory events that need to be tightly controlled. Here, we identified the GPI-anchored Sphingomyelin Phosphodiesterase, Acid-Like 3B (SMPDL3B) in a mass spectrometry screening campaign for membrane proteins co-purifying with TLRs. Deficiency of Smpdl3b in macrophages enhanced responsiveness to TLR stimulation and profoundly changed the cellular lipid composition and membrane fluidity. Increased cellular responses could be reverted by re-introducing affected ceramides, functionally linking membrane lipid composition and innate immune signaling. Finally, Smpdl3b-deficient mice displayed an intensified inflammatory response in TLR-dependent peritonitis models, establishing its negative regulatory role in vivo. Taken together, our results identify the membrane-modulating enzyme SMPDL3B as a negative regulator of TLR signaling that functions at the interface of membrane biology and innate immunity. Identification of SMPDL3B as lipid-modulating phosphodiesterase on macrophages Negative regulatory role for SMPDL3B in Toll-like receptor function Strong influence of SMPDL3B on membrane lipid composition and fluidity Smpdl3b-deficient mice show enhanced responsiveness in TLR-dependent peritonitis
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Affiliation(s)
- Leonhard X Heinz
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, 1090 Vienna, Austria
| | - Christoph L Baumann
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, 1090 Vienna, Austria
| | - Marielle S Köberlin
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, 1090 Vienna, Austria
| | - Berend Snijder
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, 1090 Vienna, Austria
| | - Riem Gawish
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, 1090 Vienna, Austria; Department of Medicine I, Laboratory of Infection Biology, Medical University of Vienna, 1090 Vienna, Austria
| | - Guanghou Shui
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Omar Sharif
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, 1090 Vienna, Austria; Department of Medicine I, Laboratory of Infection Biology, Medical University of Vienna, 1090 Vienna, Austria
| | - Irene M Aspalter
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, 1090 Vienna, Austria
| | - André C Müller
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, 1090 Vienna, Austria
| | - Richard K Kandasamy
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, 1090 Vienna, Austria
| | - Florian P Breitwieser
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, 1090 Vienna, Austria
| | - Andreas Pichlmair
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, 1090 Vienna, Austria
| | - Manuela Bruckner
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, 1090 Vienna, Austria
| | - Manuele Rebsamen
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, 1090 Vienna, Austria
| | - Stephan Blüml
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, 1090 Vienna, Austria; Division of Rheumatology, Department of Medicine III, Medical University of Vienna, 1090 Vienna, Austria
| | - Thomas Karonitsch
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, 1090 Vienna, Austria
| | - Astrid Fauster
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, 1090 Vienna, Austria
| | - Jacques Colinge
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, 1090 Vienna, Austria
| | - Keiryn L Bennett
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, 1090 Vienna, Austria
| | - Sylvia Knapp
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, 1090 Vienna, Austria; Department of Medicine I, Laboratory of Infection Biology, Medical University of Vienna, 1090 Vienna, Austria
| | - Markus R Wenk
- Department of Biochemistry and Department of Biological Sciences, National University of Singapore, Singapore 117456, Singapore; Swiss Tropical and Public Health Institute, University of Basel, 4003 Basel, Switzerland
| | - Giulio Superti-Furga
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, 1090 Vienna, Austria; Center for Physiology and Pharmacology, Medical University of Vienna, 1090 Vienna, Austria.
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9
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Birdsey GM, Shah AV, Dufton N, Reynolds LE, Osuna Almagro L, Yang Y, Aspalter IM, Khan ST, Mason JC, Dejana E, Göttgens B, Hodivala-Dilke K, Gerhardt H, Adams RH, Randi AM. The endothelial transcription factor ERG promotes vascular stability and growth through Wnt/β-catenin signaling. Dev Cell 2015; 32:82-96. [PMID: 25584796 PMCID: PMC4292982 DOI: 10.1016/j.devcel.2014.11.016] [Citation(s) in RCA: 147] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2014] [Revised: 09/24/2014] [Accepted: 11/10/2014] [Indexed: 12/14/2022]
Abstract
Blood vessel stability is essential for embryonic development; in the adult, many diseases are associated with loss of vascular integrity. The ETS transcription factor ERG drives expression of VE-cadherin and controls junctional integrity. We show that constitutive endothelial deletion of ERG (Erg(cEC-KO)) in mice causes embryonic lethality with vascular defects. Inducible endothelial deletion of ERG (Erg(iEC-KO)) results in defective physiological and pathological angiogenesis in the postnatal retina and tumors, with decreased vascular stability. ERG controls the Wnt/β-catenin pathway by promoting β-catenin stability, through signals mediated by VE-cadherin and the Wnt receptor Frizzled-4. Wnt signaling is decreased in ERG-deficient endothelial cells; activation of Wnt signaling with lithium chloride, which stabilizes β-catenin levels, corrects vascular defects in Erg(cEC-KO) embryos. Finally, overexpression of ERG in vivo reduces permeability and increases stability of VEGF-induced blood vessels. These data demonstrate that ERG is an essential regulator of angiogenesis and vascular stability through Wnt signaling.
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Affiliation(s)
- Graeme M Birdsey
- National Heart and Lung Institute (NHLI) Vascular Sciences, Hammersmith Hospital, Imperial College London, London W12 0NN, UK
| | - Aarti V Shah
- National Heart and Lung Institute (NHLI) Vascular Sciences, Hammersmith Hospital, Imperial College London, London W12 0NN, UK
| | - Neil Dufton
- National Heart and Lung Institute (NHLI) Vascular Sciences, Hammersmith Hospital, Imperial College London, London W12 0NN, UK
| | - Louise E Reynolds
- Centre for Tumour Biology, Barts Cancer Institute - a CR-UK Centre of Excellence, John Vane Science Centre, Queen Mary University of London, Charterhouse Square, London EC1M 6BQ, UK
| | - Lourdes Osuna Almagro
- National Heart and Lung Institute (NHLI) Vascular Sciences, Hammersmith Hospital, Imperial College London, London W12 0NN, UK
| | - Youwen Yang
- National Heart and Lung Institute (NHLI) Vascular Sciences, Hammersmith Hospital, Imperial College London, London W12 0NN, UK
| | - Irene M Aspalter
- Vascular Biology Laboratory, London Research Institute, Cancer Research UK, London WC2A 3PX, UK
| | - Samia T Khan
- National Heart and Lung Institute (NHLI) Vascular Sciences, Hammersmith Hospital, Imperial College London, London W12 0NN, UK
| | - Justin C Mason
- National Heart and Lung Institute (NHLI) Vascular Sciences, Hammersmith Hospital, Imperial College London, London W12 0NN, UK
| | - Elisabetta Dejana
- FIRC Institute of Molecular Oncology Foundation, IFOM, 20139 Milan, Italy
| | - Berthold Göttgens
- Department of Haematology, Wellcome Trust and MRC Cambridge Stem Cell Institute and Cambridge Institute for Medical Research, University of Cambridge, Cambridge CB2 0XY, UK
| | - Kairbaan Hodivala-Dilke
- Centre for Tumour Biology, Barts Cancer Institute - a CR-UK Centre of Excellence, John Vane Science Centre, Queen Mary University of London, Charterhouse Square, London EC1M 6BQ, UK
| | - Holger Gerhardt
- Vascular Biology Laboratory, London Research Institute, Cancer Research UK, London WC2A 3PX, UK
| | - Ralf H Adams
- Department of Tissue Morphogenesis, Max Planck Institute for Molecular Biomedicine and Faculty of Medicine, University of Münster, D-48149 Münster, Germany
| | - Anna M Randi
- National Heart and Lung Institute (NHLI) Vascular Sciences, Hammersmith Hospital, Imperial College London, London W12 0NN, UK.
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Bentley K, Franco CA, Philippides A, Blanco R, Dierkes M, Gebala V, Stanchi F, Jones M, Aspalter IM, Cagna G, Weström S, Claesson-Welsh L, Vestweber D, Gerhardt H. The role of differential VE-cadherin dynamics in cell rearrangement during angiogenesis. Nat Cell Biol 2014; 16:309-21. [DOI: 10.1038/ncb2926] [Citation(s) in RCA: 272] [Impact Index Per Article: 27.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2013] [Accepted: 01/30/2014] [Indexed: 12/17/2022]
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11
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Franco CA, Blanc J, Parlakian A, Blanco R, Aspalter IM, Kazakova N, Diguet N, Mylonas E, Gao-Li J, Vaahtokari A, Penard-Lacronique V, Fruttiger M, Rosewell I, Mericskay M, Gerhardt H, Li Z. SRF selectively controls tip cell invasive behavior in angiogenesis. Development 2013; 140:2321-33. [PMID: 23674601 DOI: 10.1242/dev.091074] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Efficient angiogenic sprouting is essential for embryonic, postnatal and tumor development. Serum response factor (SRF) is known to be important for embryonic vascular development. Here, we studied the effect of inducible endothelial-specific deletion of Srf in postnatal and adult mice. We find that endothelial SRF activity is vital for postnatal growth and survival, and is equally required for developmental and pathological angiogenesis, including during tumor growth. Our results demonstrate that SRF is selectively required for endothelial filopodia formation and cell contractility during sprouting angiogenesis, but seems dispensable for vascular remodeling. At the molecular level, we observe that vascular endothelial growth factor A induces nuclear accumulation of myocardin-related transcription factors (MRTFs) and regulates MRTF/SRF-dependent target genes including Myl9, which is important for endothelial cell migration in vitro. We conclude that SRF has a unique function in regulating migratory tip cell behavior during sprouting angiogenesis. We hypothesize that targeting the SRF pathway could provide an opportunity to selectively target tip cell filopodia-driven angiogenesis to restrict tumor growth.
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Affiliation(s)
- Claudio A Franco
- UPMC Univ Paris 06, UR 4, Aging, Stress and Inflammation, 75005 Paris, France.
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Franco CA, Blanc J, Parlakian A, Blanco R, Aspalter IM, Kazakova N, Diguet N, Mylonas E, Gao-Li J, Vaahtokari A, Penard-Lacronique V, Fruttiger M, Rosewell I, Mericskay M, Gerhardt H, Li Z. SRF selectively controls tip cell invasive behavior in angiogenesis. J Cell Sci 2013. [DOI: 10.1242/jcs.135434] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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13
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Baumann CL, Aspalter IM, Sharif O, Pichlmair A, Blüml S, Grebien F, Bruckner M, Pasierbek P, Aumayr K, Planyavsky M, Bennett KL, Colinge J, Knapp S, Superti-Furga G. CD14 is a coreceptor of Toll-like receptors 7 and 9. ACTA ACUST UNITED AC 2010; 207:2689-701. [PMID: 21078886 PMCID: PMC2989773 DOI: 10.1084/jem.20101111] [Citation(s) in RCA: 172] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
CD14 interacts with and is essential for the functions of endosomal TLR7 and TLR9 in mice. Recognition of pathogens by the innate immune system requires proteins that detect conserved molecular patterns. Nucleic acids are recognized by cytoplasmic sensors as well as by endosomal Toll-like receptors (TLRs). It has become evident that TLRs require additional proteins to be activated by their respective ligands. In this study, we show that CD14 (cluster of differentiation 14) constitutively interacts with the MyD88-dependent TLR7 and TLR9. CD14 was necessary for TLR7- and TLR9-dependent induction of proinflammatory cytokines in vitro and for TLR9-dependent innate immune responses in mice. CD14 associated with TLR9 stimulatory DNA in precipitation experiments and confocal imaging. The absence of CD14 led to reduced nucleic acid uptake in macrophages. Additionally, CD14 played a role in the stimulation of TLRs by viruses. Using various types of vesicular stomatitis virus, we showed that CD14 is dispensable for viral uptake but is required for the triggering of TLR-dependent cytokine responses. These data show that CD14 has a dual role in nucleic acid–mediated TLR activation: it promotes the selective uptake of nucleic acids, and it acts as a coreceptor for endosomal TLR activation.
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Affiliation(s)
- Christoph L Baumann
- Research Center for Molecular Medicine of the Austrian Academy of Sciences, 1090 Vienna, Austria
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Jakobsson L, Franco CA, Bentley K, Collins RT, Ponsioen B, Aspalter IM, Rosewell I, Busse M, Thurston G, Medvinsky A, Schulte-Merker S, Gerhardt H. Endothelial cells dynamically compete for the tip cell position during angiogenic sprouting. Nat Cell Biol 2010; 12:943-53. [DOI: 10.1038/ncb2103] [Citation(s) in RCA: 575] [Impact Index Per Article: 41.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2010] [Accepted: 09/06/2010] [Indexed: 10/19/2022]
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