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FEBS Lett. 2000 Dec 15;486(3):315-9.

The human PER1 gene is transcriptionally regulated by multiple signaling pathways.

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IPF PharmaCeuticals GmbH, Hannover, Germany.


The mammalian period (Per) genes are components of the circadian clock and appear to be regulated via an autoregulatory feedback loop. Here we show that the human PER1 (hPER1) gene is synergistically activated by protein kinases A and C (PKA, PKC) and cAMP responsive element binding protein. Activators and inhibitors of PKA as well as PKC modulate endogenous hPER1 expression and hPER1 promoter-driven reporter gene activity in a dose-dependent manner. Our results suggest that the hPER1 promoter acts as a sensor for multiple signaling molecules thereby integrating different physiological parameters. This regulation of hPER1 appears to be significant for rapid adaptation to changing environmental conditions.

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