Title : Phenylarsine oxide inhibited beta-adrenergic receptor-mediated IL-6 secretion: inhibition of cAMP accumulation and CREB activation in cardiac fibroblasts.

Pub. Date : 2007 Jan 19

PMID : 17141199






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1 Phenylarsine oxide inhibited beta-adrenergic receptor-mediated IL-6 secretion: inhibition of cAMP accumulation and CREB activation in cardiac fibroblasts. oxophenylarsine interleukin 6 Mus musculus
2 To study the role of protein tyrosine phosphatases (PTPs) in beta-AR-mediated IL-6 production, we selected the most widely used PTP inhibitor, phenylarsine oxide (PAO). oxophenylarsine interleukin 6 Mus musculus
3 To study the role of protein tyrosine phosphatases (PTPs) in beta-AR-mediated IL-6 production, we selected the most widely used PTP inhibitor, phenylarsine oxide (PAO). oxophenylarsine interleukin 6 Mus musculus
4 We found that PAO dose-dependently inhibited the IL-6 release in response to beta-AR agonist isoproterenol (ISO) in mouse cardiac fibroblasts. oxophenylarsine interleukin 6 Mus musculus
5 PAO also significantly inhibited the IL-6 production by forskolin, an adenylyl cyclase (AC) activator. oxophenylarsine interleukin 6 Mus musculus
6 Furthermore, PAO dose-dependently inhibited the increased cAMP accumulation by either ISO or forskolin and suppressed the phosphorylation of CREB, an important transcriptional factor for IL-6 gene expression. oxophenylarsine interleukin 6 Mus musculus
7 To our knowledge, this is the first report that PAO can inhibit ISO-induced IL-6 expression and CREB phosphorylation, demonstrating that PTPs may negatively regulate beta-AR-mediated IL-6 production. oxophenylarsine interleukin 6 Mus musculus
8 To our knowledge, this is the first report that PAO can inhibit ISO-induced IL-6 expression and CREB phosphorylation, demonstrating that PTPs may negatively regulate beta-AR-mediated IL-6 production. oxophenylarsine interleukin 6 Mus musculus