Cf. Morrison et al., THE RAT PREPROTACHYKININ-A PROMOTER IS REGULATED IN PC12 CELLS BY THESYNERGISTIC ACTION OF MULTIPLE STIMULI, Neuroscience letters, 181(1-2), 1994, pp. 117-120
We demonstrate in PC12 cells that although nerve growth factor, forsko
lin or potassium-evoked depolarisation independently induced minimal o
r no expression from the rat preprotachykinin-A gene (rPPT) promoter l
inked to a reporter gene, exposure of the cells to various combination
s of these stimuli specifically activated the rPPT promoter in transie
nt transfection assays.