Transcription factor NF-kappa B plays a crucial role in the regulation of numerous genes involved in the inflammatory response and control of cell death. Activation of NF-kappa B is mediated through the phosphorylation of its inhibitory subunit I kappa B, followed by the subsequent degradation of I kappa B at the proteasome. A second level of control involves phosphorylation events of NF-kappa B in the cell nucleus. The kinases that regulate these processes are rather undefined. NF-kappa B activation is induced by a great variety of predominantly pathogenic and noxious stimuli. A similar spectrum of conditions triggers the activation of two mitogen-activated protein (MAP) kinase cascades, designated as the JNK and p38 kinase pathways. Several points of evidence suggest that MAP kinases can participate in the regulation of NF-kappa B transcriptional activity. Here, we will review very recent data demonstrating that both the JNK and the p38 pathways are involved in the activation of NF-kappa B in the cytoplasm as well as in modulation of its transactivating potential in the nucleus.

Regulation of NF-κB activation by MAP kinase cascades

FERRARI, Davide;
1997

Abstract

Transcription factor NF-kappa B plays a crucial role in the regulation of numerous genes involved in the inflammatory response and control of cell death. Activation of NF-kappa B is mediated through the phosphorylation of its inhibitory subunit I kappa B, followed by the subsequent degradation of I kappa B at the proteasome. A second level of control involves phosphorylation events of NF-kappa B in the cell nucleus. The kinases that regulate these processes are rather undefined. NF-kappa B activation is induced by a great variety of predominantly pathogenic and noxious stimuli. A similar spectrum of conditions triggers the activation of two mitogen-activated protein (MAP) kinase cascades, designated as the JNK and p38 kinase pathways. Several points of evidence suggest that MAP kinases can participate in the regulation of NF-kappa B transcriptional activity. Here, we will review very recent data demonstrating that both the JNK and the p38 pathways are involved in the activation of NF-kappa B in the cytoplasm as well as in modulation of its transactivating potential in the nucleus.
1997
SCHULZE OSTHOFF, K.; Ferrari, Davide; Riehemann, K.; Wesselborg, S.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/1202405
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