1)宁波大学医学部,浙江省病理生理学重点实验室,宁波 315211;2)宁波大学体育学院,宁波 315211;3)宁波大学附属第一医院神经内科,宁波 315020;4)国家体育总局体育科学研究所,北京 100061
国家自然科学基金(81771166), 浙江省自然科学基金 (LY23H090005),宁波市重点研发计划(2023Z173,2022Z147), 宁波市自然科学基金(2022J118,2022J250),浙江省医药卫生科 技计划(2023KY284) 和宁波大学王宽诚幸福基金资助项目。
1)Zhejiang Provincial Key Laboratory of Pathophysiology, Health Science Center, Ningbo University, Ningbo 315211, China;2)Faculty of Physical Education, Ningbo University, Ningbo 315211, China;3)Department of Neurology, The First Affiliated Hospital of Ningbo University, Ningbo 315020, China;4)China Institute of Sport Science, Beijing 100061, China
This work was supported by grants from The National Natural Science Foundation of China (81771166), Natural Science Foundation of Zhejiang Province (LY23H090005), Ningbo Key Research and Development Plan Project (2023Z173, 2022Z147), Natural Science Foundation of Ningbo (2022J118, 2022J250), Zhejiang Province Medical and Health Technology Plan Project (2023KY284), and the K. C. Wong Magna Fund in Ningbo University.
阿尔茨海默病 (Alzheimer’s disease, AD) 是一种常见的神经退行性疾病。自噬溶酶体功能异常阻碍了细胞对神经毒性物质的降解,是导致AD发生的关键因素。运动作为一种非药物治疗手段,可以通过激活PI3K/Akt、AMPK等相关信号通路上调自噬活性,并通过促进TFEB的核易位增强自噬溶酶体功能,提高对异常聚集蛋白和受损伤细胞器的降解,保护神经元,改善AD患者的认知功能障碍。本文阐述了自噬溶酶体功能障碍在AD发生发展中的作用,以及运动调控自噬溶酶体通路改善AD作用机制,旨在为AD的预防和治疗提供新策略。
Alzheimer’s disease (AD) is a progressive neurodegenerative disorder. The pathological changes of AD include synaptic dysfunction, neurotransmitter imbalance, neuroinflammation, deposition plaques with β Amyloid (Aβ) protein as the core in different regions of the brain, and abnormal accumulation of Tau proteins in nerve cells which form neuronal fiber tangles. If Aβ, Tau, and damaged organelles in nerve cells can’t be degraded and cleared in time, it will produce significant neurotoxicity and cause neuronal damage, leading to AD. The degradation of Aβ proteins and damaged organelles depends on the autophagy-lysosome pathway. When the degradation function of neuronal cells is abnormal, neurons are prone to accumulate abnormal proteins and damaged organelles which lead to neuronal damages. Therefore, the decrease in autophagy lysosome function and the impaired degradation of neurotoxic substances play an important role in the development of AD. Abnormal autophagy function leads to the aggregation of Aβ and Tau in neurons, leading to strong neurotoxicity and the occurrence of AD symptoms. Decrease in the number of lysosomes, abnormal lysosomal pH and decreased activities of lysosomal enzymes will lead to damage of the autophagy-lysosomal system which leads to an increase in abnormal protein aggregation and triggers AD. Exercise is the most effective non-pharmacological intervention to slow down cognitive decline in dementia patients. Exercise can quickly and safely activate the autophagy lysosomal system, improve the clearance efficiency of abnormal proteins in the central and peripheral tissues, and thereby alleviate cognitive and memory impairment in AD patients. Firstly, exercises can activate the Phosphatidylinositol 3-kinases/protein kinase B (PI3K/Akt) pathway, which will further decreased the activation of glycogen synthase kinase-3β(GSK-3β) and reverse the abnormal function of mammalian target of rapamycin (mTOR). Through this pathway, exercises will improve autophagy activity, promote the degradation and clearance of Aβ and hyperphosphorylated Tau, and alleviate AD cognitive dysfunction. In addition, exercise can also regulate the Adenosine monophosphate-activated protein kinase (AMPK) signaling pathway through an adiponectin receptor 1(AdipoR1) dependent or independent ways to enhance cell autophagy, increase the number of autolysosomes in cells, enhance lysosomal function, and improve cognition. As an effective TFEB activator, exercise can upregulate related signaling pathways by activating TFEB to promote the expression of autophagy and lysosomal genes, improve clearance efficiency of toxic proteins and damaged organelles, and reduce Aβ deposition and neuronal apoptosis to improve cognitive impairment in AD patients. Autophagy lysosomes may be a new target for treating neurodegenerative diseases such as AD which is caused by the accumulation of abnormal proteins and damaged organelles. Exercise can activate autophagy-lysosomes pathway to prevent and delay the progression of AD. This article elaborated the role of autophagy lysosome dysfunction in the occurrence and development of AD, laid out the underlying mechanism of exercise preventing Alzheimer’s disease by regulating autophagy-lysosome pathway. This review aims to provide a new strategy for the prevention and treatment of AD.
贾俊,周迎松,楼琼,陈小平,徐淑君.综述与专论: 运动调控自噬溶酶体通路改善阿尔茨海默病的机制[J].生物化学与生物物理进展,2023,50(10):2314-2324
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