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FEBS Lett. 1996 Sep 9;393(1):69-73.

NF-kappa B-mediated regulation of urokinase gene expression by PMA and TNF-alpha in human A549 cells.

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Department of Genetics and Microbial Biology, University of Milano, Italy.


Binding sites for different transcription factors have been identified in the regulatory region of the human uPA gene. We investigated the role of NF-kappa B and AP-1 families of transcription factors in the induction of uPA mRNA by TNF-alpha and PMA in the A549 cell line constitutively expressing uPA mRNA and protein. Using the protein synthesis inhibitor cycloheximide and the antioxidant PDTC, that have an opposite effect on NF-kappa B and AP-1 activation, we showed that uPA mRNA induction by TNF-alpha and PMA in the A549 cell line is mainly due to NF-kappa B activation.

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