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NEAT1 involves Alzheimer's Disease (AD) progression via regulation of glycolysis and P-tau

By Yiwan Zhao, Ziqiang Wang, Yunhao Mao, Bing Li, Yuanchang Zhu, Shikuan Zhang, Songmao Wang, Yuyang Jiang, Naihan Xu, Yizhen Xie, Weidong Xie, Yaou Zhang

Posted 21 May 2019
bioRxiv DOI: 10.1101/643718

Nuclear paraspeckles assembly transcript 1 (NEAT1) is a well-known long noncoding RNA (LncRNA) with unclear mechanism in Alzheimer's disease (AD) progression. Here, we found that NEAT1 down-regulates in the early stage of AD patients and APPswe/PS1dE9 mouse. Moreover, knockdown of NEAT1 induced de-polymerization of microtubule (MT) and axonal retraction of nerve cells by dysregulation of the FZD3/GSK3β/p-tau signaling pathway. Histone acetylation analysis at the Frizzled Class Receptor 3 (FZD3) promoter shows a marked decreased in the levels of the H3K27 acetylation (H3K27Ac) after NEAT1 knockdown. Our data demonstrates that P300/CBP recruited by NEAT1 to the FZD3 promoter and induced its transcription via histone acetylation. In recent years a growing number of evidences have shown an abnormal brain glucose homeostasis in AD. In the present study we also observed an abnormal brain glucose homeostasis and enhanced sirtuin1 (SIRT1) activity after knockdown of NEAT similarly as in AD. Our results provided insight into the role of NEAT1 in the maintenance of MT stability and its effect on glucose metabolism during early stages of AD.

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