中国神经再生研究(英文版) ›› 2026, Vol. 21 ›› Issue (1): 392-405.doi: 10.4103/NRR.NRR-D-23-01273

• 原著:退行性病与再生 • 上一篇    下一篇

LncRNA GAS5调控阿尔茨海默病GSK-3β和PTEN的表达

  

  • 出版日期:2026-01-15 发布日期:2025-04-24
  • 基金资助:
    该研究得到国家自然科学基金面上项目、国家自然科学基金-新疆联合基金重点支持项目、中国医学科学院医学与健康科技创新工程重大协同创新项目、以及中国医学科学院中央级公益性科研院所基本科研业务费项目的资助。

Long noncoding RNA GAS5 acts as a competitive endogenous RNA to regulate GSK-3β and PTEN expression by sponging miR-23b-3p in Alzheimer’s disease

Li Zeng1, 2, Kaiyue Zhao1, 2, Jianghong Liu3 , Mimin Liu1, 2, Zhongdi Cai1, 2, Ting Sun1, 2, Zhuorong Li1, 2, *, Rui Liu1, 2, *   

  1. 1 Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China;  2 State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Medicinal Biotechnology, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China;  3 Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, China
  • Online:2026-01-15 Published:2025-04-24
  • Contact: Rui Liu, PhD, liurui@imb.pumc.edu.cn; Zhuorong Li, MD, lizhuorong@imb.pumc.edu.cn.
  • Supported by:
    This work was supported by the National Natural Science Foundation of China, Nos. 82173806 and U1803281; Chinese Academy of Medical Sciences (CAMS) Innovation Fund for Medical Science, Nos. 2021-I2M-1-030 and 2022-I2M-2-002; and Non-Profit Central Research Institute Fund of Chinese Academy of Medical Sciences, No. 2022-JKCS-08 (all to RL).

摘要:

研究表明,GAS5在大脑中广泛分布,调节神经炎症和胰岛素信号通路,参与阿尔茨海默病病理过程;然而GAS5在阿尔茨海默病中对认知功能的作用和具体分子机制尚不明确。实验旨在阐释GAS5靶向调控miR-23b-3p/GSK-3β/PTEN抗阿尔茨海默病的调控网络。实验通过RNA测序发现了GAS5的上调,并在5×FAD小鼠、APPswe/PSEN1dE9(APP/PS1)小鼠、阿尔茨海默病相关APPswe细胞和阿尔茨海默病患者血清中得到了验证。目标过表达和沉默的功能实验表明,GAS5对于诱导认知功能障碍至关重要,并伴有多种病理变化,包括tau高磷酸化、淀粉样β蛋白积累和神经元凋亡。进一步研究证实,GAS5作为竞争性内源RNA分子,以依赖Argonaute 2蛋白诱导的基因沉默的方式调控miR-23b-3p/GSK-3β/PTEN信号轴线,参与阿尔茨海默病的发生发展。GAS5/miR-23b-3p/GSK-3β/PTEN通路的恢复缓解了体内类似于阿尔茨海默病的症状,涉及空间认知、神经元变性、淀粉样蛋白负荷和tau磷酸化的改善。这项研究揭示了GAS5促进阿尔茨海默病发病机制的依据,提示GAS5/miR-23b-3p/GSK-3β/PTEN通路是阿尔茨海默病的候选治疗靶点。

https://orcid.org/0000-0002-8578-0733 (Rui Liu); https://orcid.org/0000-0001-5748-7444 (Zhuorong Li)

关键词: 阿尔茨海默病, 淀粉样β肽, 认知功能障碍, 竞争性内源性RNA, 糖原合成酶激酶3β, microRNA-23b-3p, 神经细胞凋亡, tau磷酸化

Abstract: Long noncoding RNA and microRNA are regulatory noncoding RNAs that are implicated in Alzheimer’s disease, but the role of long noncoding RNA-associated competitive endogenous RNA has not been fully elucidated. The long noncoding RNA growth arrest-specific 5 (GAS5) is a member of the 5′-terminal oligopyrimidine gene family that may be involved in neurological disorders, but its role in Alzheimer’s disease remains unclear. This study aimed to investigate the function of GAS5 and construct a GAS5-associated competitive endogenous RNA network comprising potential targets. RNA sequencing results showed that GAS5 was upregulated in five familial Alzheimer’s disease (5×FAD) mice, APPswe/PSEN1dE9 (APP/PS1) mice, Alzheimer’s disease-related APPswe cells, and serum from patients with Alzheimer’s disease. Functional experiments with targeted overexpression and silencing demonstrated that GAS5 played a role in cognitive dysfunction and multiple Alzheimer’s disease-associated pathologies, including tau hyperphosphorylation, amyloid-beta accumulation, and neuronal apoptosis. Mechanistic studies indicated that GAS5 acted as an endogenous sponge by competing for microRNA-23b-3p (miR-23b-3p) binding to regulate its targets glycogen synthase kinase 3beta (GSK-3β) and phosphatase and tensin homologue deleted on chromosome 10 (PTEN) expression in an Argonaute 2-induced RNA silencing complex (RISC)-dependent manner. GAS5 inhibited miR-23b-3p-mediated GSK-3β and PTEN cascades with a feedforward PTEN/protein kinase B (Akt)/GSK-3β linkage. Furthermore, recovery of GAS5/miR-23b-3p/GSK-3β/PTEN pathways relieved Alzheimer’s disease-like symptoms in vivo, indicated by the amelioration of spatial cognition, neuronal degeneration, amyloid-beta load, and tau phosphorylation. Together, these findings suggest that GAS5 promotes Alzheimer’s disease pathogenesis. This study establishes the functional convergence of the GAS5/miR-23b-3p/GSK-3β/PTEN pathway on multiple pathologies, suggesting a candidate therapeutic target in Alzheimer’s disease.

Key words: Alzheimer’s disease, amyloid-beta peptide accumulation, cognitive dysfunction, competitive endogenous RNA, glycogen synthase kinase 3beta, lncRNA growth arrest-specific 5, microRNA-23b-3p, neuronal apoptosis, phosphatase and tensin homologue deleted on chromosome 10, tau phosphorylation