Lipopolysaccharide induces expression of SSeCKS in rat lung microvascular endothelial cell.

Abstract:

:Src-suppressed C kinase substrate (SSeCKS) plays a role in membrane-cytoskeletal remodeling to regulate mitogenesis, cell differentiation, and motility. Previous study showed that lipopolysaccharide (LPS) induced a selective and strong expression of SSeCKS in the vascular endothelial cells of lung. Here we show that LPS stimulation elevated expression of SSeCKS mRNA and protein in Rat pulmonary microvascular endothelial cell (RPMVEC). LPS potentiated SSeCKS phosphorylation in a time- and dose-dependent manner, and partly induced translocation of SSeCKS from the cytosol to the membrane after LPS challenge. The PKC inhibitor, Calphostin C, significantly decreased LPS-induced phosphorylation of SSeCKS, inhibited SSeCKS translocation and actin cytoskeleton reorganization after LPS challenge, suggesting that PKC may play a role in LPS-induced SSeCKS translocation and actin rearrangement. We conclude that SSeCKS is located downstream of PKC and that SSeCKS and PKC are both necessary for LPS-induced stress fiber formation.

journal_name

Mol Cell Biochem

authors

Cheng C,Liu H,Ge H,Qian J,Qin J,Sun L,Chen M,Yan M,Shen A

doi

10.1007/s11010-007-9521-7

subject

Has Abstract

pub_date

2007-11-01 00:00:00

pages

1-8

issue

1-2

eissn

0300-8177

issn

1573-4919

journal_volume

305

pub_type

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