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PTPN14 is required for the density-dependent control of YAP1

Identifieur interne : 002E10 ( Pmc/Curation ); précédent : 002E09; suivant : 002E11

PTPN14 is required for the density-dependent control of YAP1

Auteurs : Wenqi Wang [États-Unis] ; Jun Huang [République populaire de Chine] ; Xin Wang [États-Unis] ; Jingsong Yuan [États-Unis] ; Xu Li [États-Unis] ; Lin Feng [États-Unis] ; Jae-Il Park [États-Unis] ; Junjie Chen [États-Unis]

Source :

RBID : PMC:3435498

Abstract

Wang et al. identify the protein tyrosine phosphatase PTPN14 as a novel regulator of the Hippo pathway and the oncoprotein YAP1 and as a potential tumor suppressor. They show that PTPN14 associates with and negatively regulates the oncoprotein YAP1 during contact inhibition and that PTPN14 stability is controlled at low cell density by way of the CRL2LRR1 E3 ligase complex.


Url:
DOI: 10.1101/gad.192955.112
PubMed: 22948661
PubMed Central: 3435498

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PMC:3435498

Le document en format XML

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<p>Wang et al. identify the protein tyrosine phosphatase PTPN14 as a novel regulator of the Hippo pathway and the oncoprotein YAP1 and as a potential tumor suppressor. They show that PTPN14 associates with and negatively regulates the oncoprotein YAP1 during contact inhibition and that PTPN14 stability is controlled at low cell density by way of the CRL2
<sup>LRR1</sup>
E3 ligase complex.</p>
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<alt-title alt-title-type="right-running">Cell density-dependent control of YAP1 by PTPN14</alt-title>
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<name>
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<given-names>Jun</given-names>
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<name>
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<given-names>Xu</given-names>
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<given-names>Junjie</given-names>
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Department of Experimental Radiation Oncology, The University of Texas M.D. Anderson Cancer Center, Houston, Texas 77030, USA;</aff>
<aff id="aff2">
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Life Sciences Institute, Zhejiang University, Hangzhou, Zhejiang 310058, China</aff>
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Corresponding author E-mail
<email xlink:type="simple">jchen8@mdanderson.org</email>
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<issue>17</issue>
<fpage>1959</fpage>
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<history>
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<day>27</day>
<month>3</month>
<year>2012</year>
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<year>2012</year>
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<abstract abstract-type="precis">
<p>Wang et al. identify the protein tyrosine phosphatase PTPN14 as a novel regulator of the Hippo pathway and the oncoprotein YAP1 and as a potential tumor suppressor. They show that PTPN14 associates with and negatively regulates the oncoprotein YAP1 during contact inhibition and that PTPN14 stability is controlled at low cell density by way of the CRL2
<sup>LRR1</sup>
E3 ligase complex.</p>
</abstract>
<abstract>
<p>Through an shRNA-mediated loss-of-function screen, we identified PTPN14 as a potential tumor suppressor. PTPN14 interacts with yes-associated protein 1 (YAP1), a member of the hippo signaling pathway. We showed that PTPN14 promotes the nucleus-to-cytoplasm translocation of YAP1 during contact inhibition and thus inhibits YAP1 transactivation activity. Interestingly, PTPN14 protein stability was positively controlled by cell density. We identified the CRL2
<sup>LRR1</sup>
(cullin2 RING ubiquitin ligase complex/leucine-rich repeat protein 1) complex as the E3 ligase that targets PTPN14 for degradation at low cell density. Collectively, these data suggest that PTPN14 acts to suppress cell proliferation by promoting cell density-dependent cytoplasmic translocation of YAP1.</p>
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