SnoN facilitates ALK1-Smad1/5 signaling during embryonic angiogenesis.
SnoN facilitates ALK1-Smad1/5 signaling during embryonic angiogenesis.
复制标题
DOI:
10.1083/jcb.201208113
复制
发表时间:
2013-09-16
期刊:
影响因子:
--
通讯作者:
Luo K
中科院分区:
文献类型:
--
作者:
Zhu Q;Kim YH;Wang D;Oh SP;Luo K
SnoN directly binds ALK1 on the plasma membrane, enhancing Smad1/5 activation, and is required for normal angiogenesis. In endothelial cells, two type I receptors of the transforming growth factor β (TGF-β) family, ALK1 and ALK5, coordinate to regulate embryonic angiogenesis in response to BMP9/10 and TGF-β. Whereas TGF-β binds to and activates ALK5, leading to Smad2/3 phosphorylation and inhibition of endothelial cell proliferation and migration, BMP9/10 and TGF-β also bind to ALK1, resulting in the activation of Smad1/5. SnoN is a negative regulator of ALK5 signaling through the binding and repression of Smad2/3. Here we uncover a positive role of SnoN in enhancing Smad1/5 activation in endothelial cells to promote angiogenesis. Upon ligand binding, SnoN directly bound to ALK1 on the plasma membrane and facilitated the interaction between ALK1 and Smad1/5, enhancing Smad1/5 phosphorylation. Disruption of this SnoN–Smad interaction impaired Smad1/5 activation and up-regulated Smad2/3 activity. This resulted in defective angiogenesis and arteriovenous malformations, leading to embryonic lethality at E12.5. Thus, SnoN is essential for TGF-β/BMP9-dependent biological processes by its ability to both positively and negatively modulate the activities of Smad-dependent pathways.
登录
查看更多内容
DOI:
10.1073/pnas.0504107102
发表时间:
2005-08-30
影响因子:
11.1
作者:
Krakowski, AR;Laboureau, J;Luo, KX
通讯作者:
Luo, KX
DOI:
10.1073/pnas.97.6.2626
发表时间:
2000-03-14
影响因子:
11.1
作者:
Oh, SP;Seki, T;Li, E
通讯作者:
Li, E
影响因子:
16
作者:
Goumans, MJ;Valdimarsdottir, G;ten Dijke, P
通讯作者:
ten Dijke, P
影响因子:
11.4
作者:
Goumans, MJ;Valdimarsdottir, G;ten Dijke, P
通讯作者:
ten Dijke, P
影响因子:
44.1
作者:
通讯作者:
--