Role of src-suppressed C kinase substrate in rat pulmonary microvascular endothelial hyperpermeability stimulated by inflammatory cytokines.
Inflamm Res
; 59(11): 949-58, 2010 Nov.
Article
em En
| MEDLINE
| ID: mdl-20454828
ABSTRACT
OBJECTIVE:
The aim of the study was to investigate the role of src-suppressed C kinase substrate (SSeCKS) in the modulation of rat pulmonary microvascular endothelial cells (RPMVEC) permeability elicited by interleukin (IL)-1ß and tumor necrosis factor (TNF)-α.METHODS:
The gene expression of SSeCKS was analyzed by reverse transcription-polymerase chain reaction. Immunoblotting was used to determine the SSeCKS protein expression and the activation of the protein kinase C (PKC) signaling pathway. A RPMVEC monolayer was constructed to determine changes of transendothelial electrical resistance (TER) and FITC-dextran flux (P (d)) across the monolayer. SSeCKS-specific small interfering RNA was transfected into RPMVEC.RESULTS:
IL-1ß and TNF-α activated the PKC signaling pathway in RPMVEC, and up-regulated the gene and protein expression of SSeCKS. Depletion of endogenous SSeCKS in RPMVEC significantly attenuated cytokine-induced decrease in TER and increase in P (d), but not to the basal levels. PKC inhibitors also significantly decreased cytokine-induced hyperpermeability and SSeCKS expression.CONCLUSIONS:
SSeCKS is involved in the endothelial hyperpermeability induced by IL-1ß and TNF-α in inflammatory process.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Permeabilidade Capilar
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Citocinas
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Proteínas de Ciclo Celular
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Células Endoteliais
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Proteínas de Ancoragem à Quinase A
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Pulmão
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Microcirculação
Idioma:
En
Ano de publicação:
2010
Tipo de documento:
Article