Title : 12-O-tetradecanoylphorbol-13-acetate (TPA)-induced c-Jun N-terminal kinase (JNK) phosphatase renders immortalized or transformed epithelial cells refractory to TPA-inducible JNK activity.

Pub. Date : 2000 Jul 28

PMID : 10807930






14 Functional Relationships(s)
Download
Sentence
Compound Name
Protein Name
Organism
1 12-O-tetradecanoylphorbol-13-acetate (TPA)-induced c-Jun N-terminal kinase (JNK) phosphatase renders immortalized or transformed epithelial cells refractory to TPA-inducible JNK activity. Tetradecanoylphorbol Acetate mitogen-activated protein kinase 8 Homo sapiens
2 12-O-tetradecanoylphorbol-13-acetate (TPA)-induced c-Jun N-terminal kinase (JNK) phosphatase renders immortalized or transformed epithelial cells refractory to TPA-inducible JNK activity. Tetradecanoylphorbol Acetate mitogen-activated protein kinase 8 Homo sapiens
3 12-O-tetradecanoylphorbol-13-acetate (TPA)-induced c-Jun N-terminal kinase (JNK) phosphatase renders immortalized or transformed epithelial cells refractory to TPA-inducible JNK activity. Tetradecanoylphorbol Acetate mitogen-activated protein kinase 8 Homo sapiens
4 12-O-tetradecanoylphorbol-13-acetate (TPA)-induced c-Jun N-terminal kinase (JNK) phosphatase renders immortalized or transformed epithelial cells refractory to TPA-inducible JNK activity. Tetradecanoylphorbol Acetate mitogen-activated protein kinase 8 Homo sapiens
5 12-O-tetradecanoylphorbol-13-acetate (TPA)-induced c-Jun N-terminal kinase (JNK) phosphatase renders immortalized or transformed epithelial cells refractory to TPA-inducible JNK activity. Tetradecanoylphorbol Acetate mitogen-activated protein kinase 8 Homo sapiens
6 12-O-tetradecanoylphorbol-13-acetate (TPA)-induced c-Jun N-terminal kinase (JNK) phosphatase renders immortalized or transformed epithelial cells refractory to TPA-inducible JNK activity. Tetradecanoylphorbol Acetate mitogen-activated protein kinase 8 Homo sapiens
7 12-O-tetradecanoylphorbol-13-acetate (TPA)-induced c-Jun N-terminal kinase (JNK) phosphatase renders immortalized or transformed epithelial cells refractory to TPA-inducible JNK activity. Tetradecanoylphorbol Acetate mitogen-activated protein kinase 8 Homo sapiens
8 JNK can be activated by the tumor promoting agent, 12-O-tetradecanoylphorbol-13-acetate (TPA) in normal human oral keratinocytes but not in human keratinocytes that have been immortalized (HOK-16B and HaCaT) or transformed (HOK-16B-Bap-T) nor in a cervical carcinoma cell line (HeLa). Tetradecanoylphorbol Acetate mitogen-activated protein kinase 8 Homo sapiens
9 JNK can be activated by the tumor promoting agent, 12-O-tetradecanoylphorbol-13-acetate (TPA) in normal human oral keratinocytes but not in human keratinocytes that have been immortalized (HOK-16B and HaCaT) or transformed (HOK-16B-Bap-T) nor in a cervical carcinoma cell line (HeLa). Tetradecanoylphorbol Acetate mitogen-activated protein kinase 8 Homo sapiens
10 The refractory JNK activation response to TPA is not due a defect in the JNK pathway, because JNK can be activated by other stimuli, e.g. UV irradiation and an alkylating agent N-methyl-N"-nitrosoguanidine in these immortalized or transformed cells. Tetradecanoylphorbol Acetate mitogen-activated protein kinase 8 Homo sapiens
11 More importantly, the refractory JNK and JNKK activation response to TPA can be restored by treatment of the cells with a combination of TPA and a protein-tyrosine phosphatase inhibitor, sodium orthovanadate. Tetradecanoylphorbol Acetate mitogen-activated protein kinase 8 Homo sapiens
12 More importantly, the refractory JNK and JNKK activation response to TPA can be restored by treatment of the cells with a combination of TPA and a protein-tyrosine phosphatase inhibitor, sodium orthovanadate. Tetradecanoylphorbol Acetate mitogen-activated protein kinase 8 Homo sapiens
13 Furthermore, pretreatment of cells with TPA partially inhibited UV- or N-methyl-N"-nitrosoguanidine-induced JNK activity. Tetradecanoylphorbol Acetate mitogen-activated protein kinase 8 Homo sapiens
14 These results suggest that a TPA-inducible, orthovanadate-sensitive protein-tyrosine phosphatase may specifically down-regulate JNK signaling pathway in these immortalized/transformed epithelial cells. Tetradecanoylphorbol Acetate mitogen-activated protein kinase 8 Homo sapiens