c-Jun N-terminal kinase is involved in motility of endothelial cell
Experimental & Molecular Medicine
; : 276-283, 2001.
Article
in English
| WPRIM (Western Pacific)
| ID: wpr-144620
Responsible library:
WPRO
ABSTRACT
Cell motility is essential for a wide range of cellular activities including anigogenesis as well as metastasis of tumor cells. Ras has been implicated in cell migration and invasion, and functions at upstream of mitogen-activated protein kinase (MAPK) families, which include extracellular-signal regulated kinase (ERK), c-Jun N-terminal kinase (JNK) and p38 MAPK. In the present study, we examined the role of JNK in endothelial cell motility using stable transfectant (DAR-ECV) of ECV304 endothelial cells expressing previously established oncogenic H-Ras (leu 61). DAR-ECV cells showed an enhanced angiogenic potential and motility (approximately 2-fold) compared to ECV304 cells. Western blot analysis revealed constitutive activation of JNK in DAR-ECV cells. Pretreatment of JNK specific inhibitors, curcumin and all trans-retinoic acid, decreased the basal motility of DAR-ECV cells in a dose-dependent manner. These inhibitors also suppressed the motility stimulated by known JNK agonists such as TNFalpha and anisomycin. To further confirm the role of JNK, ECV304 cells expressing dominant active SEK1 (DAS-ECV) were generated. Basal non-stimulated levels of the cellular migration were greater in DAS-ECV clones than those in control ECV304 cells. These results suggest that Ras-SEK1-JNK pathway regulates motility of endothelial cells during angiogenesis.
Full text:
Available
Database:
WPRIM (Western Pacific)
Main subject:
Tretinoin
/
Umbilical Veins
/
Endothelium, Vascular
/
Urokinase-Type Plasminogen Activator
/
Cell Line
/
Cell Movement
/
Genes, ras
/
Tumor Necrosis Factor-alpha
/
Neovascularization, Physiologic
/
Matrix Metalloproteinases
Limits:
Humans
Language:
English
Journal:
Experimental & Molecular Medicine
Year:
2001
Document type:
Article