scholarly journals Angiotensin II‐induced migration of vascular smooth muscle cells (VSMCs) is mediated by both 72‐KDa spleen tyrosine kinase (Syk) via p38‐MAPK activated c‐Src and by ERK1/2 via c‐Src‐induced EGFR transactivation

2008 ◽  
Vol 22 (S1) ◽  
Author(s):  
Benon Emmanuel Mugabe ◽  
Fariborz A Yaghini ◽  
Cuneyt K Buharalioglu ◽  
Kafait U Malik
1999 ◽  
Vol 276 (6) ◽  
pp. H1927-H1934 ◽  
Author(s):  
Tomosaburo Takahashi ◽  
Takahiro Taniguchi ◽  
Hiroaki Konishi ◽  
Ushio Kikkawa ◽  
Yuichi Ishikawa ◽  
...  

Involvement of Akt/Protein kinase B (PKB), a serine/threonine kinase with a pleckstrin-homology domain, in angiotensin II (ANG II)-induced signal transduction was investigated in cultured vascular smooth muscle cells (VSMC). Stimulation of the cells with ANG II led to a marked increase in the kinase activity of Akt/PKB, which coincided with Ser-473 phosphorylation. ANG II-stimulated Akt/PKB activation was rapid, concentration dependent, and inhibited by the AT1-receptor antagonist CV-11974, but not by pertussis toxin. Akt/PKB activity was stimulated by the Ca2+ ionophore ionomycin, suggesting the possible involvement of Ca2+ in ANG II-stimulated Akt/PKB activation. However, blockade of Ca2+ mobilization by BAPTA-AM only partially inhibited ANG II-stimulated Akt/PKB activation. ANG II-stimulated Akt/PKB activation was inhibited by the tyrosine kinase inhibitors genistein and herbimycin A and by the phosphatidylinositol 3-kinase (PI3K) inhibitors wortmannin and LY-294002. These results indicate that ANG II stimulates Akt/PKB activity via AT1 receptors in VSMC and that the activities of tyrosine kinase and PI3K are required for this activation.


2010 ◽  
Vol 24 (S1) ◽  
Author(s):  
Annet Kirabo ◽  
Patrick Kearns ◽  
Jennifer Sasser ◽  
Arturo J Cardounel ◽  
Chris Baylis ◽  
...  

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