Biochem Biophys Res Commun 2002,
PMID: 11944898
Miao, Hui; Yuan, Suli; Wang, Yingxiao; Tsygankov, Alexander; Chien, Shu
Fluid shear stress can activate PI-3 kinase and JNK in vascular endothelial cells. This study was designed to establish the role of Cbl as an upstream molecule in the shear stress activation of PI-3 kinase and JNK. Confluent monolayers of bovine aortic endothelial cells (BAECs) were subjected to a shear stress of 12 dyn/cm(2) over intervals ranging from 0.5 to 30 min. Shear stress increased Cbl phosphorylation to 2.9-fold of control and Cbl association with the regulatory PI-3 kinase subunit p85 to 5.4-fold. The PI-3 kinase activity measured in Cbl-immunoprecipitated complexes increased to 11.7-fold in response to shear, suggesting that the shear stress activation of PI-3 kinase involves its association with Cbl. Furthermore, the shear stress induction of JNK was attenuated by a negative mutant of Cbl. Finally, shear stress caused an activation of PI 3-kinase only in BAECs seeded onto fibronectin, vitronectin, or laminin, but not poly-l-lysine. Our results suggest that Cbl plays a critical role in the shear stress induction of PI 3-kinase and JNK activities, and that this shear-induced activation requires the interaction of endothelial integrins with extracellular matrix proteins.
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Text Mining Data
PI 3-kinase — Cbl: "
Our results suggest that
Cbl plays a critical role in the shear stress induction of
PI 3-kinase and JNK activities, and that this shear induced activation requires the interaction of endothelial integrins with extracellular matrix proteins
"
Manually curated Databases
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IRef Biogrid Interaction:
CBL
—
PIK3R1
(physical association, affinity chromatography technology)
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IRef Biogrid Interaction:
CBL
—
PIK3R1
(direct interaction, enzymatic study)
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IRef Biogrid Interaction:
CBL
—
MAPK8
(physical association, affinity chromatography technology)
-
IRef Biogrid Interaction:
CBL
—
MAPK8
(direct interaction, enzymatic study)
In total, 2 gene pairs are associated to this article in curated databases