Title : 12-O-Tetradecanoylphorbol-13-Acetate Induces Up-Regulated Transcription of Variant 1 but Not Variant 2 of VIL2 in Esophageal Squamous Cell Carcinoma Cells via ERK1/2/AP-1/Sp1 Signaling.

Pub. Date : 2015

PMID : 25915860






5 Functional Relationships(s)
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1 12-O-Tetradecanoylphorbol-13-Acetate Induces Up-Regulated Transcription of Variant 1 but Not Variant 2 of VIL2 in Esophageal Squamous Cell Carcinoma Cells via ERK1/2/AP-1/Sp1 Signaling. Tetradecanoylphorbol Acetate Jun proto-oncogene, AP-1 transcription factor subunit Homo sapiens
2 AP-1 and Sp1 binding sites within the promoter region of VIL2 V1 acted not only as basal transcriptional elements but also as a composite TPA-responsive element (TRE) for the transcription of VIL2 V1. Tetradecanoylphorbol Acetate Jun proto-oncogene, AP-1 transcription factor subunit Homo sapiens
3 TPA stimulation enhanced c-Jun and Sp1 binding to the TRE via activation of the ERK1/2 pathway and increased protein levels of c-Jun, c-Fos, and Sp1, resulting in over-expression of VIL2 V1, whereas the MEK1/2 inhibitor U0126 blocked these events. Tetradecanoylphorbol Acetate Jun proto-oncogene, AP-1 transcription factor subunit Homo sapiens
4 TPA stimulation enhanced c-Jun and Sp1 binding to the TRE via activation of the ERK1/2 pathway and increased protein levels of c-Jun, c-Fos, and Sp1, resulting in over-expression of VIL2 V1, whereas the MEK1/2 inhibitor U0126 blocked these events. Tetradecanoylphorbol Acetate Jun proto-oncogene, AP-1 transcription factor subunit Homo sapiens
5 Taken together, these results suggest that TPA is able to induce VIL2 V1 over-expression in ESCC cells by activating MEK/ERK1/2 signaling and increasing binding of Sp1 and c-Jun to the TRE of the VIL2 V1 promoter, and that VIL2 is an important TPA-induced effector. Tetradecanoylphorbol Acetate Jun proto-oncogene, AP-1 transcription factor subunit Homo sapiens