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Angiopoietin 2 regulates the transformation and integrity of lymphatic endothelial cell junctions

Identifieur interne : 002E12 ( Pmc/Corpus ); précédent : 002E11; suivant : 002E13

Angiopoietin 2 regulates the transformation and integrity of lymphatic endothelial cell junctions

Auteurs : Wei Zheng ; Harri Nurmi ; Sila Appak ; Amélie Sabine ; Esther Bovay ; Emilia A. Korhonen ; Fabrizio Orsenigo ; Marja Lohela ; Gabriela D Mico ; Tanja Holopainen ; Ching Ching Leow ; Elisabetta Dejana ; Tatiana V. Petrova ; Hellmut G. Augustin ; Kari Alitalo

Source :

RBID : PMC:4102766

Abstract

Lymphatic endothelial cell junctions in lymphatic capillaries transform from a zipper-like to a button-like pattern during development. Here, Zheng et al. found that an Angiopoietin 2 (ANG2)-blocking antibody inhibits embryonic lymphangiogenesis, whereas endothelium-specific ANG2 overexpression induced lymphatic hyperplasia. ANG2 inhibition blocked VE-cadherin phosphorylation and suppressed the onset of lymphatic valve formation and subsequent valve maturation. These data identify ANG2 as the first essential regulator of the functionally important interendothelial cell–cell junctions that form during lymphatic development.


Url:
DOI: 10.1101/gad.237677.114
PubMed: 25030698
PubMed Central: 4102766

Links to Exploration step

PMC:4102766

Le document en format XML

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<name sortKey="Orsenigo, Fabrizio" sort="Orsenigo, Fabrizio" uniqKey="Orsenigo F" first="Fabrizio" last="Orsenigo">Fabrizio Orsenigo</name>
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<nlm:aff id="aff7">Department of Biotechnological and Biomolecular Sciences, University of Milan, Milan 20129, Italy;</nlm:aff>
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<name sortKey="Lohela, Marja" sort="Lohela, Marja" uniqKey="Lohela M" first="Marja" last="Lohela">Marja Lohela</name>
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<nlm:aff id="aff8">Biomedicum Imaging Unit, Biomedicum Helsinki, University of Helsinki, Helsinki 00014, Finland;</nlm:aff>
</affiliation>
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<name sortKey="D Mico, Gabriela" sort="D Mico, Gabriela" uniqKey="D Mico G" first="Gabriela" last="D Mico">Gabriela D Mico</name>
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<nlm:aff id="aff2">Translational Cancer Biology Program, University of Helsinki, Helsinki 00014, Finland;</nlm:aff>
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<name sortKey="Holopainen, Tanja" sort="Holopainen, Tanja" uniqKey="Holopainen T" first="Tanja" last="Holopainen">Tanja Holopainen</name>
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<nlm:aff id="aff2">Translational Cancer Biology Program, University of Helsinki, Helsinki 00014, Finland;</nlm:aff>
</affiliation>
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<name sortKey="Leow, Ching Ching" sort="Leow, Ching Ching" uniqKey="Leow C" first="Ching Ching" last="Leow">Ching Ching Leow</name>
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<nlm:aff id="aff9">MedImmune, Gaithersburg, Maryland 20878, USA;</nlm:aff>
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<name sortKey="Dejana, Elisabetta" sort="Dejana, Elisabetta" uniqKey="Dejana E" first="Elisabetta" last="Dejana">Elisabetta Dejana</name>
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<nlm:aff id="aff6">FIRC Institute of Molecular Oncology, Milan 20139, Italy;</nlm:aff>
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<nlm:aff id="aff7">Department of Biotechnological and Biomolecular Sciences, University of Milan, Milan 20129, Italy;</nlm:aff>
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<name sortKey="Petrova, Tatiana V" sort="Petrova, Tatiana V" uniqKey="Petrova T" first="Tatiana V." last="Petrova">Tatiana V. Petrova</name>
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<nlm:aff id="aff5">Department of Oncology, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Epalinges CH-1066, Switzerland;</nlm:aff>
</affiliation>
<affiliation>
<nlm:aff id="aff10">Swiss Institute for Cancer Research, École Polytechnique Fédérale de Lausanne, Lausanne CH-1066, Switzerland</nlm:aff>
</affiliation>
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<name sortKey="Augustin, Hellmut G" sort="Augustin, Hellmut G" uniqKey="Augustin H" first="Hellmut G." last="Augustin">Hellmut G. Augustin</name>
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<nlm:aff id="aff3">Division of Vascular Oncology and Metastasis, German Cancer Research Center Heidelberg, Heidelberg 69120, Germany;</nlm:aff>
</affiliation>
<affiliation>
<nlm:aff id="aff4">Department of Vascular Biology and Tumor Angiogenesis, Heidelberg University, Mannheim 68167, Germany;</nlm:aff>
</affiliation>
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<name sortKey="Alitalo, Kari" sort="Alitalo, Kari" uniqKey="Alitalo K" first="Kari" last="Alitalo">Kari Alitalo</name>
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<nlm:aff id="aff1">Wihuri Research Institute,</nlm:aff>
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<nlm:aff id="aff2">Translational Cancer Biology Program, University of Helsinki, Helsinki 00014, Finland;</nlm:aff>
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<title level="j">Genes & Development</title>
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<div type="abstract" xml:lang="en">
<p>Lymphatic endothelial cell junctions in lymphatic capillaries transform from a zipper-like to a button-like pattern during development. Here, Zheng et al. found that an Angiopoietin 2 (ANG2)-blocking antibody inhibits embryonic lymphangiogenesis, whereas endothelium-specific ANG2 overexpression induced lymphatic hyperplasia. ANG2 inhibition blocked VE-cadherin phosphorylation and suppressed the onset of lymphatic valve formation and subsequent valve maturation. These data identify ANG2 as the first essential regulator of the functionally important interendothelial cell–cell junctions that form during lymphatic development.</p>
</div>
</front>
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<journal-meta>
<journal-id journal-id-type="nlm-ta">Genes Dev</journal-id>
<journal-id journal-id-type="iso-abbrev">Genes Dev</journal-id>
<journal-id journal-id-type="publisher-id">GAD</journal-id>
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<issn pub-type="ppub">0890-9369</issn>
<issn pub-type="epub">1549-5477</issn>
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<subject>Research Paper</subject>
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<title-group>
<article-title>Angiopoietin 2 regulates the transformation and integrity of lymphatic endothelial cell junctions</article-title>
<alt-title alt-title-type="left-running">Zheng et al.</alt-title>
<alt-title alt-title-type="right-running">ANG2 regulates LEC junctions</alt-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname>Zheng</surname>
<given-names>Wei</given-names>
</name>
<xref ref-type="aff" rid="aff1">1</xref>
<xref ref-type="aff" rid="aff2">2</xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Nurmi</surname>
<given-names>Harri</given-names>
</name>
<xref ref-type="aff" rid="aff1">1</xref>
<xref ref-type="aff" rid="aff2">2</xref>
<xref ref-type="author-notes" rid="fn1">11</xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Appak</surname>
<given-names>Sila</given-names>
</name>
<xref ref-type="aff" rid="aff3">3</xref>
<xref ref-type="aff" rid="aff4">4</xref>
<xref ref-type="author-notes" rid="fn1">11</xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Sabine</surname>
<given-names>Amélie</given-names>
</name>
<xref ref-type="aff" rid="aff5">5</xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Bovay</surname>
<given-names>Esther</given-names>
</name>
<xref ref-type="aff" rid="aff5">5</xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Korhonen</surname>
<given-names>Emilia A.</given-names>
</name>
<xref ref-type="aff" rid="aff2">2</xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Orsenigo</surname>
<given-names>Fabrizio</given-names>
</name>
<xref ref-type="aff" rid="aff6">6</xref>
<xref ref-type="aff" rid="aff7">7</xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Lohela</surname>
<given-names>Marja</given-names>
</name>
<xref ref-type="aff" rid="aff8">8</xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>D’Amico</surname>
<given-names>Gabriela</given-names>
</name>
<xref ref-type="aff" rid="aff2">2</xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Holopainen</surname>
<given-names>Tanja</given-names>
</name>
<xref ref-type="aff" rid="aff2">2</xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Leow</surname>
<given-names>Ching Ching</given-names>
</name>
<xref ref-type="aff" rid="aff9">9</xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Dejana</surname>
<given-names>Elisabetta</given-names>
</name>
<xref ref-type="aff" rid="aff6">6</xref>
<xref ref-type="aff" rid="aff7">7</xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Petrova</surname>
<given-names>Tatiana V.</given-names>
</name>
<xref ref-type="aff" rid="aff5">5</xref>
<xref ref-type="aff" rid="aff10">10</xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Augustin</surname>
<given-names>Hellmut G.</given-names>
</name>
<xref ref-type="aff" rid="aff3">3</xref>
<xref ref-type="aff" rid="aff4">4</xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Alitalo</surname>
<given-names>Kari</given-names>
</name>
<xref ref-type="aff" rid="aff1">1</xref>
<xref ref-type="aff" rid="aff2">2</xref>
<xref ref-type="corresp" rid="cor1">12</xref>
</contrib>
<aff id="aff1">
<label>1</label>
Wihuri Research Institute,</aff>
<aff id="aff2">
<label>2</label>
Translational Cancer Biology Program, University of Helsinki, Helsinki 00014, Finland;</aff>
<aff id="aff3">
<label>3</label>
Division of Vascular Oncology and Metastasis, German Cancer Research Center Heidelberg, Heidelberg 69120, Germany;</aff>
<aff id="aff4">
<label>4</label>
Department of Vascular Biology and Tumor Angiogenesis, Heidelberg University, Mannheim 68167, Germany;</aff>
<aff id="aff5">
<label>5</label>
Department of Oncology, Centre Hospitalier Universitaire Vaudois, University of Lausanne, Epalinges CH-1066, Switzerland;</aff>
<aff id="aff6">
<label>6</label>
FIRC Institute of Molecular Oncology, Milan 20139, Italy;</aff>
<aff id="aff7">
<label>7</label>
Department of Biotechnological and Biomolecular Sciences, University of Milan, Milan 20129, Italy;</aff>
<aff id="aff8">
<label>8</label>
Biomedicum Imaging Unit, Biomedicum Helsinki, University of Helsinki, Helsinki 00014, Finland;</aff>
<aff id="aff9">
<label>9</label>
MedImmune, Gaithersburg, Maryland 20878, USA;</aff>
<aff id="aff10">
<label>10</label>
Swiss Institute for Cancer Research, École Polytechnique Fédérale de Lausanne, Lausanne CH-1066, Switzerland</aff>
</contrib-group>
<author-notes>
<fn id="fn1">
<label>11</label>
<p>These authors contributed equally to this work.</p>
</fn>
<corresp id="cor1">
<label>12</label>
Corresponding author E-mail
<email xlink:type="simple">kari.alitalo@helsinki.fi</email>
</corresp>
</author-notes>
<pub-date pub-type="ppub">
<day>15</day>
<month>7</month>
<year>2014</year>
</pub-date>
<volume>28</volume>
<issue>14</issue>
<fpage>1592</fpage>
<lpage>1603</lpage>
<history>
<date date-type="received">
<day>7</day>
<month>1</month>
<year>2014</year>
</date>
<date date-type="accepted">
<day>9</day>
<month>6</month>
<year>2014</year>
</date>
</history>
<permissions>
<copyright-statement>
<ext-link ext-link-type="uri" xlink:href="http://genesdev.cshlp.org/site/misc/terms.xhtml">© 2014 Zheng et al.; Published by Cold Spring Harbor Laboratory Press</ext-link>
</copyright-statement>
<copyright-year>2014</copyright-year>
<license license-type="creative-commons" xlink:href="http://creativecommons.org/licenses/by-nc/4.0/">
<license-p>This article is distributed exclusively by Cold Spring Harbor Laboratory Press for the first six months after the full-issue publication date (see
<ext-link ext-link-type="uri" xlink:href="http://genesdev.cshlp.org/site/misc/terms.xhtml">http://genesdev.cshlp.org/site/misc/terms.xhtml</ext-link>
). After six months, it is available under a Creative Commons License (Attribution-NonCommercial 4.0 International), as described at
<ext-link ext-link-type="uri" xlink:href="http://creativecommons.org/licenses/by-nc/4.0/">http://creativecommons.org/licenses/by-nc/4.0/</ext-link>
.</license-p>
</license>
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<self-uri xlink:title="pdf" xlink:type="simple" xlink:href="1592.pdf"></self-uri>
<abstract abstract-type="precis">
<p>Lymphatic endothelial cell junctions in lymphatic capillaries transform from a zipper-like to a button-like pattern during development. Here, Zheng et al. found that an Angiopoietin 2 (ANG2)-blocking antibody inhibits embryonic lymphangiogenesis, whereas endothelium-specific ANG2 overexpression induced lymphatic hyperplasia. ANG2 inhibition blocked VE-cadherin phosphorylation and suppressed the onset of lymphatic valve formation and subsequent valve maturation. These data identify ANG2 as the first essential regulator of the functionally important interendothelial cell–cell junctions that form during lymphatic development.</p>
</abstract>
<abstract>
<p>Primitive lymphatic vessels are remodeled into functionally specialized initial and collecting lymphatics during development. Lymphatic endothelial cell (LEC) junctions in initial lymphatics transform from a zipper-like to a button-like pattern during collecting vessel development, but what regulates this process is largely unknown. Angiopoietin 2 (
<italic>Ang2</italic>
) deficiency leads to abnormal lymphatic vessels. Here we found that an ANG2-blocking antibody inhibited embryonic lymphangiogenesis, whereas endothelium-specific ANG2 overexpression induced lymphatic hyperplasia. ANG2 inhibition blocked VE-cadherin phosphorylation at tyrosine residue 685 and the concomitant formation of button-like junctions in initial lymphatics. The defective junctions were associated with impaired lymph uptake. In collecting lymphatics, adherens junctions were disrupted, and the vessels leaked upon ANG2 blockade or gene deletion. ANG2 inhibition also suppressed the onset of lymphatic valve formation and subsequent valve maturation. These data identify ANG2 as the first essential regulator of the functionally important interendothelial cell–cell junctions that form during lymphatic development.</p>
</abstract>
<kwd-group>
<kwd>angiopoietin 2</kwd>
<kwd>lymphatic</kwd>
<kwd>VE-cadherin</kwd>
<kwd>junction</kwd>
</kwd-group>
<counts>
<page-count count="12"></page-count>
</counts>
</article-meta>
</front>
</pmc>
</record>

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