Serveur d'exploration sur le lymphœdème

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Efficient activation of the lymphangiogenic growth factor VEGF-C requires the C-terminal domain of VEGF-C and the N-terminal domain of CCBE1

Identifieur interne : 000595 ( Main/Exploration ); précédent : 000594; suivant : 000596

Efficient activation of the lymphangiogenic growth factor VEGF-C requires the C-terminal domain of VEGF-C and the N-terminal domain of CCBE1

Auteurs : Sawan Kumar Jha [Finlande] ; Khushbu Rauniyar [Finlande] ; Terhi Karpanen [Norvège] ; Veli-Matti Lepp Nen [Finlande] ; Pascal Brouillard [Belgique] ; Miikka Vikkula [Belgique] ; Kari Alitalo [Finlande] ; Michael Jeltsch [Finlande]

Source :

RBID : PMC:5501841

Abstract

The collagen- and calcium-binding EGF domains 1 (CCBE1) protein is necessary for lymphangiogenesis. Its C-terminal collagen-like domain was shown to be required for the activation of the major lymphangiogenic growth factor VEGF-C (Vascular Endothelial Growth Factor-C) along with the ADAMTS3 (A Disintegrin And Metalloproteinase with Thrombospondin Motifs-3) protease. However, it remained unclear how the N-terminal domain of CCBE1 contributed to lymphangiogenic signaling. Here, we show that efficient activation of VEGF-C requires its C-terminal domain both in vitro and in a transgenic mouse model. The N-terminal EGF-like domain of CCBE1 increased VEGFR-3 signaling by colocalizing pro-VEGF-C with its activating protease to the lymphatic endothelial cell surface. When the ADAMTS3 amounts were limited, proteolytic activation of pro-VEGF-C was supported by the N-terminal domain of CCBE1, but not by its C-terminal domain. A single amino acid substitution in ADAMTS3, identified from a lymphedema patient, was associated with abnormal CCBE1 localization. These results show that CCBE1 promotes VEGFR-3 signaling and lymphangiogenesis by different mechanisms, which are mediated independently by the two domains of CCBE1: by enhancing the cleavage activity of ADAMTS3 and by facilitating the colocalization of VEGF-C and ADAMTS3. These new insights should be valuable in developing new strategies to therapeutically target VEGF-C/VEGFR-3-induced lymphangiogenesis.


Url:
DOI: 10.1038/s41598-017-04982-1
PubMed: 28687807
PubMed Central: 5501841


Affiliations:


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<wicri:regionArea>Helsinki</wicri:regionArea>
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</author>
</analytic>
<series>
<title level="j">Scientific Reports</title>
<idno type="eISSN">2045-2322</idno>
<imprint>
<date when="2017">2017</date>
</imprint>
</series>
</biblStruct>
</sourceDesc>
</fileDesc>
<profileDesc>
<textClass></textClass>
</profileDesc>
</teiHeader>
<front>
<div type="abstract" xml:lang="en">
<p id="Par1">The collagen- and calcium-binding EGF domains 1 (CCBE1) protein is necessary for lymphangiogenesis. Its C-terminal collagen-like domain was shown to be required for the activation of the major lymphangiogenic growth factor VEGF-C (Vascular Endothelial Growth Factor-C) along with the ADAMTS3 (A Disintegrin And Metalloproteinase with Thrombospondin Motifs-3) protease. However, it remained unclear how the N-terminal domain of CCBE1 contributed to lymphangiogenic signaling. Here, we show that efficient activation of VEGF-C requires its C-terminal domain both
<italic>in vitro</italic>
and in a transgenic mouse model. The N-terminal EGF-like domain of CCBE1 increased VEGFR-3 signaling by colocalizing pro-VEGF-C with its activating protease to the lymphatic endothelial cell surface. When the ADAMTS3 amounts were limited, proteolytic activation of pro-VEGF-C was supported by the N-terminal domain of CCBE1, but not by its C-terminal domain. A single amino acid substitution in ADAMTS3, identified from a lymphedema patient, was associated with abnormal CCBE1 localization. These results show that CCBE1 promotes VEGFR-3 signaling and lymphangiogenesis by different mechanisms, which are mediated independently by the two domains of CCBE1: by enhancing the cleavage activity of ADAMTS3 and by facilitating the colocalization of VEGF-C and ADAMTS3. These new insights should be valuable in developing new strategies to therapeutically target VEGF-C/VEGFR-3-induced lymphangiogenesis.</p>
</div>
</front>
<back>
<div1 type="bibliography">
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</TEI>
<affiliations>
<list>
<country>
<li>Belgique</li>
<li>Finlande</li>
<li>Norvège</li>
</country>
<region>
<li>Uusimaa</li>
<li>Østlandet</li>
</region>
<settlement>
<li>Helsinki</li>
<li>Oslo</li>
</settlement>
<orgName>
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</orgName>
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<name sortKey="Jha, Sawan Kumar" sort="Jha, Sawan Kumar" uniqKey="Jha S" first="Sawan Kumar" last="Jha">Sawan Kumar Jha</name>
</noRegion>
<name sortKey="Alitalo, Kari" sort="Alitalo, Kari" uniqKey="Alitalo K" first="Kari" last="Alitalo">Kari Alitalo</name>
<name sortKey="Alitalo, Kari" sort="Alitalo, Kari" uniqKey="Alitalo K" first="Kari" last="Alitalo">Kari Alitalo</name>
<name sortKey="Alitalo, Kari" sort="Alitalo, Kari" uniqKey="Alitalo K" first="Kari" last="Alitalo">Kari Alitalo</name>
<name sortKey="Jeltsch, Michael" sort="Jeltsch, Michael" uniqKey="Jeltsch M" first="Michael" last="Jeltsch">Michael Jeltsch</name>
<name sortKey="Jeltsch, Michael" sort="Jeltsch, Michael" uniqKey="Jeltsch M" first="Michael" last="Jeltsch">Michael Jeltsch</name>
<name sortKey="Lepp Nen, Veli Matti" sort="Lepp Nen, Veli Matti" uniqKey="Lepp Nen V" first="Veli-Matti" last="Lepp Nen">Veli-Matti Lepp Nen</name>
<name sortKey="Lepp Nen, Veli Matti" sort="Lepp Nen, Veli Matti" uniqKey="Lepp Nen V" first="Veli-Matti" last="Lepp Nen">Veli-Matti Lepp Nen</name>
<name sortKey="Rauniyar, Khushbu" sort="Rauniyar, Khushbu" uniqKey="Rauniyar K" first="Khushbu" last="Rauniyar">Khushbu Rauniyar</name>
</country>
<country name="Norvège">
<region name="Østlandet">
<name sortKey="Karpanen, Terhi" sort="Karpanen, Terhi" uniqKey="Karpanen T" first="Terhi" last="Karpanen">Terhi Karpanen</name>
</region>
</country>
<country name="Belgique">
<noRegion>
<name sortKey="Brouillard, Pascal" sort="Brouillard, Pascal" uniqKey="Brouillard P" first="Pascal" last="Brouillard">Pascal Brouillard</name>
</noRegion>
<name sortKey="Vikkula, Miikka" sort="Vikkula, Miikka" uniqKey="Vikkula M" first="Miikka" last="Vikkula">Miikka Vikkula</name>
<name sortKey="Vikkula, Miikka" sort="Vikkula, Miikka" uniqKey="Vikkula M" first="Miikka" last="Vikkula">Miikka Vikkula</name>
</country>
</tree>
</affiliations>
</record>

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