Title : Reactive oxygen species promote TNFalpha-induced death and sustained JNK activation by inhibiting MAP kinase phosphatases.

Pub. Date : 2005 Mar 11

PMID : 15766528






4 Functional Relationships(s)
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1 Reactive oxygen species promote TNFalpha-induced death and sustained JNK activation by inhibiting MAP kinase phosphatases. Reactive Oxygen Species mitogen-activated protein kinase 8 Homo sapiens
2 Sustained JNK activation in NF-kappaB-deficient cells was suggested to depend on reactive oxygen species (ROS), but how ROS affect JNK activation was unclear. Reactive Oxygen Species mitogen-activated protein kinase 8 Homo sapiens
3 Sustained JNK activation in NF-kappaB-deficient cells was suggested to depend on reactive oxygen species (ROS), but how ROS affect JNK activation was unclear. Reactive Oxygen Species mitogen-activated protein kinase 8 Homo sapiens
4 We now show that TNFalpha-induced ROS, whose accumulation is suppressed by mitochondrial superoxide dismutase, cause oxidation and inhibition of JNK-inactivating phosphatases by converting their catalytic cysteine to sulfenic acid. Reactive Oxygen Species mitogen-activated protein kinase 8 Homo sapiens