Title : Activated Ki-Ras suppresses 12-O-tetradecanoylphorbol-13-acetate-induced activation of the c-Jun NH2-terminal kinase pathway in human colon cancer cells.

Pub. Date : 1999 May 15

PMID : 10344756






6 Functional Relationships(s)
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1 Activated Ki-Ras suppresses 12-O-tetradecanoylphorbol-13-acetate-induced activation of the c-Jun NH2-terminal kinase pathway in human colon cancer cells. Tetradecanoylphorbol Acetate mitogen-activated protein kinase 8 Homo sapiens
2 TPA induced both phosphorylation of stress-activated protein kinase kinase 1 (SEK1) and c-Jun NH2-terminal kinase (JNK) in the activated Ki-ras-disrupted clones but not in HCT116. Tetradecanoylphorbol Acetate mitogen-activated protein kinase 8 Homo sapiens
3 TPA induced both phosphorylation of stress-activated protein kinase kinase 1 (SEK1) and c-Jun NH2-terminal kinase (JNK) in the activated Ki-ras-disrupted clones but not in HCT116. Tetradecanoylphorbol Acetate mitogen-activated protein kinase 8 Homo sapiens
4 Furthermore, TPA-induced SEK1-JNK activation was observed in a DLD-1-derived activated Ki-ras-disrupted clone but not in DLD-1. Tetradecanoylphorbol Acetate mitogen-activated protein kinase 8 Homo sapiens
5 The TPA-induced SEK1-JNK activation in these disrupted clones was completely inhibited by the protein kinase C (PKC) inhibitor, GF109203X (1 microM), but not by another PKC inhibitor, H7 (50 microM), whereas TPA-induced MEK1/2-ERK activation was partially and completely inhibited by GF109203X (1 microM) and H7 (50 microM), respectively. Tetradecanoylphorbol Acetate mitogen-activated protein kinase 8 Homo sapiens
6 The TPA-induced SEK1-JNK activation in these disrupted clones was completely inhibited by the protein kinase C (PKC) inhibitor, GF109203X (1 microM), but not by another PKC inhibitor, H7 (50 microM), whereas TPA-induced MEK1/2-ERK activation was partially and completely inhibited by GF109203X (1 microM) and H7 (50 microM), respectively. bisindolylmaleimide I mitogen-activated protein kinase 8 Homo sapiens