p38 MAP kinase-dependent regulation of endothelial cell permeability

Talaibek Borbiev, Anna Birukova, Feng Liu, Saule Nurmukhambetova, William T. Gerthoffer, Joe G.N. Garcia, Alexander Dmitriyevich Verin

Research output: Contribution to journalArticle

85 Citations (Scopus)

Abstract

We have previously shown that thrombin induces endothelial cell barrier dysfunction via cytoskeleton activation and contraction and have determined the important role of endothelial cell myosin light chain kinase (MLCK) in this process. In the present study we explored p38 MAP kinase as a potentially important enzyme in thrombin-mediated endothelial cell contractile response and permeability. Thrombin induces significant p38 MAP kinase activation in a time-dependent manner with maximal effect at 30 min, which correlates with increased phosphorylation of actin- and myosin-binding protein, caldesmon. Both SB-203580 and dominant negative p38 adenoviral vector significantly attenuated thrombin-induced declines in transendothelial electrical resistance. Consistent with these data SB-203580 decreased actin stress fiber formation produced by thrombin in endothelium. In addition, dominant negative p38 had no effect on thrombin-induced myosin light chain diphosphorylation. Thrombin-induced total and site-specific caldesmon phosphorylation (Ser789) as well as dissociation of caldesmon-myosin complex were attenuated by SB-203580 pretreatment. These results suggest the involvement of p38 MAP kinase activities and caldesmon phosphorylation in the MLCK-independent regulation of thrombin-induced endothelial cell permeability.

Original languageEnglish (US)
Pages (from-to)L911-L918
JournalAmerican Journal of Physiology - Lung Cellular and Molecular Physiology
Volume287
Issue number5 31-5
DOIs
StatePublished - Nov 1 2004
Externally publishedYes

Fingerprint

p38 Mitogen-Activated Protein Kinases
Thrombin
Permeability
Endothelial Cells
Calmodulin-Binding Proteins
Myosin-Light-Chain Kinase
Phosphorylation
Myosins
Microfilament Proteins
Stress Fibers
Myosin Light Chains
Cytoskeleton
Electric Impedance
Endothelium
Actins
Enzymes
SB 203580

Keywords

  • Caldesmon
  • Thrombin
  • Transendothelial electrical resistance
  • p38 mitogen-activated protein kinase

ASJC Scopus subject areas

  • Physiology
  • Pulmonary and Respiratory Medicine
  • Physiology (medical)
  • Cell Biology

Cite this

p38 MAP kinase-dependent regulation of endothelial cell permeability. / Borbiev, Talaibek; Birukova, Anna; Liu, Feng; Nurmukhambetova, Saule; Gerthoffer, William T.; Garcia, Joe G.N.; Verin, Alexander Dmitriyevich.

In: American Journal of Physiology - Lung Cellular and Molecular Physiology, Vol. 287, No. 5 31-5, 01.11.2004, p. L911-L918.

Research output: Contribution to journalArticle

Borbiev, T, Birukova, A, Liu, F, Nurmukhambetova, S, Gerthoffer, WT, Garcia, JGN & Verin, AD 2004, 'p38 MAP kinase-dependent regulation of endothelial cell permeability', American Journal of Physiology - Lung Cellular and Molecular Physiology, vol. 287, no. 5 31-5, pp. L911-L918. https://doi.org/10.1152/ajplung.00372.2003
Borbiev, Talaibek ; Birukova, Anna ; Liu, Feng ; Nurmukhambetova, Saule ; Gerthoffer, William T. ; Garcia, Joe G.N. ; Verin, Alexander Dmitriyevich. / p38 MAP kinase-dependent regulation of endothelial cell permeability. In: American Journal of Physiology - Lung Cellular and Molecular Physiology. 2004 ; Vol. 287, No. 5 31-5. pp. L911-L918.
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