| Literature DB >> 18341989 |
Yi Wen1, W Haung Yu, Bryan Maloney, Jason Bailey, Junrong Ma, Isabelle Marié, Thomas Maurin, Lili Wang, Helen Figueroa, Mathieu Herman, Pavan Krishnamurthy, Li Liu, Emmanuel Planel, Lit-Fui Lau, Debomoy K Lahiri, Karen Duff.
Abstract
Cyclin-dependent kinase 5 (cdk5) has been implicated in Alzheimer's disease (AD) pathogenesis. Here, we demonstrate that overexpression of p25, an activator of cdk5, led to increased levels of BACE1 mRNA and protein in vitro and in vivo. A p25/cdk5 responsive region containing multiple sites for signal transducer and activator of transcription (STAT1/3) was identified in the BACE1 promoter. STAT3 interacts with the BACE1 promoter, and p25-overexpressing mice had elevated levels of pSTAT3 and BACE1, whereas cdk5-deficient mice had reduced levels. Furthermore, mice with a targeted mutation in the STAT3 cdk5 responsive site had lower levels of BACE1. Increased BACE levels in p25 overexpressing mice correlated with enhanced amyloidogenic processing that could be reversed by a cdk5 inhibitor. These data demonstrate a pathway by which p25/cdk5 increases the amyloidogenic processing of APP through STAT3-mediated transcriptional control of BACE1 that could have implications for AD pathogenesis.Entities:
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Year: 2008 PMID： 18341989 PMCID： PMC2329816 DOI： 10.1016/j.neuron.2008.02.024
Source DB: PubMed Journal: Neuron ISSN： 0896-6273 Impact factor: 17.173