A DNA motif related to the cAMP-responsive element and an exon-located activator protein-2 binding site in the human tissue-type plasminogen activator gene promoter cooperate in basal expression and convey activation by phorbol ester and cAMP.

Abstract excerpt

Tissue-type plasminogen activator (t-PA) gene expression is regulated by the tumor-promoting phorbol ester, phorbol-12-myristate 13-acetate (PMA), by cyclic AMP analogues, and the cAMP agonist, forskolin. Based on nuclear "run-on" transcription assays, t-PA expression is modulated by PMA on the level of transcription. 8-Bromo-cyclic AMP and forskolin do not induce t-PA gene transcription alone but act...

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