A functional mouse retroposed gene Rps23r1 reduces Alzheimer's beta-amyloid levels and tau phosphorylation.

A functional mouse retroposed gene Rps23r1 reduces Alzheimer's beta-amyloid levels and tau phosphorylation.
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DOI:
10.1016/j.neuron.2009.08.036
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发表时间:
2009-11-12
期刊:
影响因子:
16.2
通讯作者:
Xu, Huaxi
Xu, Huaxi
中科院分区:
医学1区
文献类型:
--
作者:
Zhang, Yun-wu;Liu, Shijie;Zhang, Xue;Li, Wu-Bo;Chen, Yaomin;Huang, Xiumei;Sun, Liangwu;Luo, Wenjie;Netzer, William J.;Threadgill, Richard;Wiegand, Gordon;Wang, Ruishan;Cohen, Stanley N.;Greengard, Paul;Liao, Francesca-Fang;Li, Limin;Xu, Huaxi

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由β-淀粉样蛋白(Aβ)组成的老年斑和由过度磷酸化的tau蛋白组成的神经元缠结是阿尔茨海默病(AD)的主要病理标志。阐明调节Aβ生成和tau蛋白过度磷酸化的因素对于AD干预至关重要。在这里,我们确定了一个新的小鼠基因Fg 01,起源于核糖体蛋白S23的逆转录。我们证明,FG 01蛋白通过与腺苷酸环化酶相互作用以激活cAMP/PKA从而抑制GSK-3活性,从而降低Aβ和tau磷酸化水平。Fg 01的功能在包括人在内的各种物种的细胞和过表达FG 01的转基因小鼠中得到证实。此外,三重转基因AD小鼠的AD样病变得到改善,突触标记蛋白的水平增加后,他们与Fg 01转基因小鼠杂交。我们的研究揭示了一个新的目标/途径调节AD的病理和发现一个新的逆转录酶及其在调节蛋白激酶途径的作用。
Senile plaques consisting of β-amyloid (Aβ) and neurofibrillary tangles composed of hyperphosphorylated tau are major pathological hallmarks of Alzheimer’s disease (AD). Elucidation of factors that modulate Aβ generation and tau hyperphosphorylation is crucial for AD intervention. Here we identify a novel mouse gene Fg01 that originated through retroposition of ribosomal protein S23. We demonstrate that FG01 protein reduces the levels of Aβ and tau phosphorylation by interacting with adenylate cyclases to activate cAMP/PKA and thus inhibit GSK-3 activity. The function of Fg01 is demonstrated in cells of various species including human, and in transgenic mice overexpressing FG01. Furthermore, the AD-like pathologies of triple transgenic AD mice were improved and levels of synaptic maker proteins increased after crossing them with Fg01 transgenic mice. Our studies reveal a new target/pathway for regulating AD pathologies and uncover a novel retrogene and its role in regulating protein kinase pathways.
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发表时间: 2009-01
期刊: Nature reviews. Genetics
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