An essential role of the JIP1 scaffold protein for JNK activation in adipose tissue.
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ABSTRACT: The c-Jun NH2-terminal kinase (JNK) is activated during obesity. One consequence of obesity is that JNK phosphorylates the adapter protein insulin receptor substrate 1 (IRS-1) on Ser 307 and inhibits signaling by the insulin receptor. JNK can therefore cause peripheral insulin resistance during obesity and may contribute to the development of type 2 diabetes. Here we report that the JNK-interacting protein 1 (JIP1) scaffold protein, which binds components of the JNK signaling module, is essential for JNK activation in the adipose tissue of obese mice. These data identify JIP1 as a novel molecular target for therapeutic intervention in the development of obesity.
SUBMITTER: Jaeschke A
PROVIDER: S-EPMC514178 | biostudies-other | 2004 Aug
REPOSITORIES: biostudies-other
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