Title : Protein kinase D specifically mediates apoptosis signal-regulating kinase 1-JNK signaling induced by H2O2 but not tumor necrosis factor.

Pub. Date : 2005 May 13

PMID : 15755722






5 Functional Relationships(s)
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1 Protein kinase D specifically mediates apoptosis signal-regulating kinase 1-JNK signaling induced by H2O2 but not tumor necrosis factor. Hydrogen Peroxide mitogen-activated protein kinase kinase kinase 5 Homo sapiens
2 Consistently, H2O2, but not TNF, induced phosphorylation of PKD and translocation of PKD from endothelial cell membrane to cytoplasm where it associates with the JNK upstream activator, apoptosis signal-regulating kinase 1 (ASK1). Hydrogen Peroxide mitogen-activated protein kinase kinase kinase 5 Homo sapiens
3 Consistently, H2O2, but not TNF, induced phosphorylation of PKD and translocation of PKD from endothelial cell membrane to cytoplasm where it associates with the JNK upstream activator, apoptosis signal-regulating kinase 1 (ASK1). Hydrogen Peroxide mitogen-activated protein kinase kinase kinase 5 Homo sapiens
4 Inhibition of PKD by Go6976 or by small interfering RNA of PKD blocked H2O2-induced ASK1-JNK activation and endothelial cell apoptosis. Hydrogen Peroxide mitogen-activated protein kinase kinase kinase 5 Homo sapiens
5 More significantly, the 14-3-3-binding defective forms of PKD failed to associate with ASK1 and to activate JNK signaling, highlighting the importance of 14-3-3 binding of PKD in H2O2-induced activation of ASK1-JNK cascade. Hydrogen Peroxide mitogen-activated protein kinase kinase kinase 5 Homo sapiens