Formoterol increased the IL-6 release but did not influence the IL-8 release.
Consistent with this , IL-4 and TGF-beta effects on IL-8 and fibronectin release were paralleled by changes in mRNA levels.
This mRNA response was followed by a large increase in the biosynthesis of the c-jun protein (AP-1) , as shown by metabolic labeling and immunoprecipitation analysis.
We attempted to map the regions of c-jun which are important for transformation by constructing hybrids between c-jun and junD.