Let-7 Family as a Mediator of Exercise on Alzheimer's Disease.

IF 3.6 4区 医学 Q3 CELL BIOLOGY
Shanbin Ke, Zhengqiong Liu, Yuwen Wan
{"title":"Let-7 Family as a Mediator of Exercise on Alzheimer's Disease.","authors":"Shanbin Ke, Zhengqiong Liu, Yuwen Wan","doi":"10.1007/s10571-025-01559-9","DOIUrl":null,"url":null,"abstract":"<p><p>Memory loss, and behavioral impairments. Hallmark pathological features include amyloid-beta (Aβ) plaques, tau neurofibrillary tangles, chronic inflammation, and impaired neuronal signaling. Physical exercise is increasingly recognized as a non-pharmacological intervention to attenuate Alzheimer's disease (AD) risk and progression by enhancing neuroplasticity, improving mitochondrial function, and modulating immune responses. The let-7 family of microRNAs is critically involved in AD pathology. Elevated levels of let-7b and let-7e have been reported in the cerebrospinal fluid of AD patients, with let-7b levels correlating positively with total tau and phosphorylated tau concentrations. Overexpression of let-7a enhances Aβ-induced neurotoxicity, increases neuronal apoptosis by up to 45%, and alters autophagy-related signaling via the PI3K/Akt/mTOR pathway, as shown by 1.8-fold increases in LC3-II/I ratios and 2.2-fold upregulation of Beclin-1 expression. Exercise modulates let-7 expression in a tissue-specific and context-dependent manner. Aerobic training reduces skeletal muscle expression of let-7b-5p by 30-35%, while increasing its suppressor Lin28a by 40%, thereby improving mitochondrial respiration. Overall, modulation of let-7 by exercise influences neuronal survival, autophagy, and inflammation, offering a potential mechanism through which physical activity exerts neuroprotective effects in AD. Quantitative characterization of let-7 expression patterns may support its use as a diagnostic and therapeutic biomarker, though further research is needed to establish optimal modulation strategies.</p>","PeriodicalId":9742,"journal":{"name":"Cellular and Molecular Neurobiology","volume":"45 1","pages":"43"},"PeriodicalIF":3.6000,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12089606/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Cellular and Molecular Neurobiology","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1007/s10571-025-01559-9","RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CELL BIOLOGY","Score":null,"Total":0}
引用次数: 0

Abstract

Memory loss, and behavioral impairments. Hallmark pathological features include amyloid-beta (Aβ) plaques, tau neurofibrillary tangles, chronic inflammation, and impaired neuronal signaling. Physical exercise is increasingly recognized as a non-pharmacological intervention to attenuate Alzheimer's disease (AD) risk and progression by enhancing neuroplasticity, improving mitochondrial function, and modulating immune responses. The let-7 family of microRNAs is critically involved in AD pathology. Elevated levels of let-7b and let-7e have been reported in the cerebrospinal fluid of AD patients, with let-7b levels correlating positively with total tau and phosphorylated tau concentrations. Overexpression of let-7a enhances Aβ-induced neurotoxicity, increases neuronal apoptosis by up to 45%, and alters autophagy-related signaling via the PI3K/Akt/mTOR pathway, as shown by 1.8-fold increases in LC3-II/I ratios and 2.2-fold upregulation of Beclin-1 expression. Exercise modulates let-7 expression in a tissue-specific and context-dependent manner. Aerobic training reduces skeletal muscle expression of let-7b-5p by 30-35%, while increasing its suppressor Lin28a by 40%, thereby improving mitochondrial respiration. Overall, modulation of let-7 by exercise influences neuronal survival, autophagy, and inflammation, offering a potential mechanism through which physical activity exerts neuroprotective effects in AD. Quantitative characterization of let-7 expression patterns may support its use as a diagnostic and therapeutic biomarker, though further research is needed to establish optimal modulation strategies.

Let-7家族在阿尔茨海默病运动中的中介作用
失忆和行为障碍。典型的病理特征包括淀粉样蛋白(Aβ)斑块、tau神经原纤维缠结、慢性炎症和神经元信号受损。体育锻炼越来越被认为是一种通过增强神经可塑性、改善线粒体功能和调节免疫反应来减轻阿尔茨海默病(AD)风险和进展的非药物干预手段。let-7 microrna家族在AD病理中起着关键作用。据报道,AD患者脑脊液中let-7b和let-7e水平升高,其中let-7b水平与总tau蛋白和磷酸化tau蛋白浓度呈正相关。let-7a的过表达增强了a β诱导的神经毒性,增加了高达45%的神经元凋亡,并通过PI3K/Akt/mTOR途径改变了自噬相关的信号传导,LC3-II/I比值增加了1.8倍,Beclin-1表达上调了2.2倍。运动以组织特异性和上下文依赖的方式调节let-7的表达。有氧训练使骨骼肌let-7b-5p的表达减少30-35%,同时使其抑制因子Lin28a的表达增加40%,从而改善线粒体呼吸。总的来说,运动对let-7的调节影响神经元存活、自噬和炎症,提供了体育活动在AD中发挥神经保护作用的潜在机制。let-7表达模式的定量表征可能支持其作为诊断和治疗生物标志物的使用,尽管需要进一步研究以建立最佳调节策略。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
CiteScore
7.70
自引率
0.00%
发文量
137
审稿时长
4-8 weeks
期刊介绍: Cellular and Molecular Neurobiology publishes original research concerned with the analysis of neuronal and brain function at the cellular and subcellular levels. The journal offers timely, peer-reviewed articles that describe anatomic, genetic, physiologic, pharmacologic, and biochemical approaches to the study of neuronal function and the analysis of elementary mechanisms. Studies are presented on isolated mammalian tissues and intact animals, with investigations aimed at the molecular mechanisms or neuronal responses at the level of single cells. Cellular and Molecular Neurobiology also presents studies of the effects of neurons on other organ systems, such as analysis of the electrical or biochemical response to neurotransmitters or neurohormones on smooth muscle or gland cells.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:604180095
Book学术官方微信