VEGF receptor 2 endocytic trafficking regulates arterial morphogenesis.
VEGF receptor 2 endocytic trafficking regulates arterial morphogenesis.
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DOI:
10.1016/j.devcel.2010.02.016
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发表时间:
2010-05-18
影响因子:
11.8
通讯作者:
Simons, Michael
中科院分区:
文献类型:
--
作者:
Lanahan, Anthony A.;Hermans, Karlien;Claes, Filip;Kerley-Hamilton, Joanna S.;Zhuang, Zhen W.;Giordano, Frank J.;Carmeliet, Peter;Simons, Michael
VEGF is the key growth factor regulating arterial morphogenesis. However, molecular events involved in this process have not been elucidated. Synectin null mice demonstrate impaired VEGF signaling and a marked reduction in arterial morphogenesis. Here we show that this occurs due to delayed trafficking of VEGFR2-containing endosomes that exposes internalized VEGFR2 to selective dephosphorylation by PTP1b on Y1175 site. Synectin involvement in VEGFR2 intracellular trafficking requires myosin-VI, and myosin-VI knockout in mice or knockdown in zebrafish phenocopy the synectin null phenotype. Silencing of PTP1b restores VEGFR2 activation and significantly recovers arterial morphogenesis in myosin-VI−/− knockdown zebrafish and synectin−/− mice. We conclude that activation of the VEGF-mediated arterial morphogenesis cascade requires phosphorylation of the VEGFR2 Y1175 site that is dependent on trafficking of internalized VEGFR2 away from the plasma membrane via a synectin-myosin-VI complex. This key event in VEGF signaling occurs at an intracellular site and is regulated by a novel endosomal trafficking-dependent process.
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影响因子:
7.8
作者:
Lampugnani, Maria Grazia;Orsenigo, Fabrizio;Gagliani, Maria Cristina;Tacchetti, Carlo;Dejana, Elisabetta
通讯作者:
Dejana, Elisabetta
影响因子:
7.8
作者:
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