Sustained JNK activation induces endothelial apoptosis: studies with colchicine and shear stress.

Abstract excerpt

The disruption of microtubules by treating bovine aortic endothelial cells with 10(-7)-10(-5) M colchicine caused apoptosis, as evidenced by DNA laddering and TdT-mediated dUTP nick end labeling fluorescence staining. Colchicine treatment also induced a sustained activation of c-Jun NH(2)-terminal kinase (JNK) that lasted for >/=12 h. The blockade of JNK activity by using the negative interfering mutant JNK(K-R)...

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