期刊
INTERNATIONAL JOURNAL OF DEVELOPMENTAL NEUROSCIENCE
卷 30, 期 6, 页码 411-419出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijdevneu.2012.08.003
关键词
PTEN; Akt/PKB; Glycogen synthase kinase 3; Alzheimer's disease; Tau phosphorylation; Okadaic acid
资金
- Natural Science Foundation of Fujian Province [C0820002]
One of pathological hallmarks of Alzheimer's disease (AD) is neurofibrillary tangles (NFTs) consisting of abnormally hyperphosphorylated tau. The molecular mechanisms underlying the regulation of tau hyperphosphorylation remain largely unclear. The phosphoinositide 3-kinase (PI3K)/Akt pathway has been implicated in the pathogenesis of AD, however, potential functions and role of tumor suppressor phosphatase and tensin homologue deleted on chromosome 10 (PTEN) in AD pathogenesis have not been fully explored. Here, we report that okadaic acid (OA)-induced tau phosphorylation is accompanied by PTEN induction, knockdown of PTEN reduces the tau hyperphosphorylation by OA in SH-SY5Y cells and increases cell proliferation and survival. The effect of PTEN suppression on tau dephosphorylation appeared to be mediated by inhibition of glycogen synthase kinase 3 while enhancing the Akt activity. Reduction of tau phosphorylation was also observed in the OA-induced parental SH-SY5Y cells co-treated with bisperoxovanadate (bpv), a potent PTEN inhibitor. Our studies provide evidence for an effect of PTEN on the phosphorylation of tau in AD pathogenesis and give some insight into the mechanisms through which suppression of PTEN expression may contribute towards the amelioration of tauopathy, implying that pharmacological intervention of PTEN may be a new therapeutic approach for the treatment of AD. (C) 2012 ISDN. Published by Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据