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Ephedrine induced Thioredoxin-1 expression through β-adrenergic receptors/Cyclic AMP/protein kinase A/dopamine- and Cyclic AMP-regulated phosphoprotein signaling pathway.
In this study, we found that Eph induced Trx-1 expression, which was inhibited by propranolol (β-adrenergic receptors inhibitor), but not by phenoxybenzamine (α-adrenergic receptors inhibitor) in rat pheochromocytoma PC12 cells. Moreover, the increase of Trx-1 expression was inhibited by SQ22536 (adenylyl cyclase inhibitor) and H-89 (protein kinase A inhibitor). Interestingly, the effect of Eph on dopamine- and Cyclic AMP-regulated phosphoprotein (DARPP-32) was similar to Trx-1. Thus, the relationship between Trx-1 and DARPP-32 was further studied. The DARPP-32 siRNA significantly reduced Trx-1 expression, but Trx-1 siRN...
Source: Cellular Signalling - February 14, 2013 Category: Cytology Authors: Jia JJ, Zeng XS, Li Y, Ma S, Bai J Tags: Cell Signal Source Type: research