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中国药学(英文版) ›› 2016, Vol. 25 ›› Issue (8): 605-613.DOI: 10.5246/jcps.2016.08.068

• 【研究论文】 • 上一篇    下一篇

肉桂醛促进神经细胞线粒体功能并抑制Aβ毒性

白力丹1, 李雪1, 常青2, 武睿2, 章京2*, 杨晓达1,3*   

  1. 1. 北京大学医学部 药学院 天然药物及仿生药物国家重点实验室; 化学生物学系, 北京 100191
    2. 北京大学医学部 基础医学院 病理学系, 北京 100191
    3. 国家中医药管理局 中药复方解毒重点研究室, 北京 100191
  • 收稿日期:2016-04-20 修回日期:2016-05-13 出版日期:2016-09-01 发布日期:2016-05-23
  • 通讯作者: Tel.: +86-010-82805611, E-mail: xyang@bjmu.edu.cn, zhangjing6202@163.com
  • 基金资助:
    National Natural Science Foundation of China (Grant No. 21571006 and 21271012) and Beijing Natural Science Foundation (Grant No. 7164308).

Cinnamaldehyde promotes mitochondrial function and reduces Aβ toxicity in neural cells

Lidan Bai1, Xue Li1, Qing Chang2, Rui Wu2, Jing Zhang2*, Xiaoda Yang1,3*   

  1. 1. State Key Laboratories of Natural and Biomimetic Drugs; Department of Chemical Biology, School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing 100191, China
    2. Department of Pathology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing 100191, China
    3. SATCM Key Laboratory of Compound Drug Detoxication at Peking University, Beijing 100191, China
  • Received:2016-04-20 Revised:2016-05-13 Online:2016-09-01 Published:2016-05-23
  • Contact: Tel.: +86-010-82805611, E-mail: xyang@bjmu.edu.cn, zhangjing6202@163.com
  • Supported by:
    National Natural Science Foundation of China (Grant No. 21571006 and 21271012) and Beijing Natural Science Foundation (Grant No. 7164308).

摘要:

一些研究表明肉桂及其主要活性成分肉桂醛具有抗阿尔兹海默症(AD)活性。为了阐明肉桂醛的作用机制、促进抗AD药物开发, 本文研究了肉桂醛对SH-SY5Y神经细胞特别是线粒体的作用。实验结果表明, 肉桂醛能够促进神经细胞在有和无β-淀粉状蛋白(Aβ)负载下的细胞活力, 其作用机制包括: 保护和恢复损伤的正常线粒体形态、维持线粒体膜电位和降低ROS的产生。肉桂醛导致Drp1蛋白表达可能与其阻止诱导线粒体裂解有关。此外, 肉桂醛也能抑制的寡聚化, 降低其细胞毒性。但肉桂醛对SH-SY5Y神经细胞Tau蛋白的磷酸化却没有明显作用。总之, 肉桂醛可促进神经细胞线粒体功能并抑制毒性, 这两个机制在神经保护方面互相关联。本文结果提示肉桂醛可以作为保健药物用于AD和其他衰老性代谢疾病的防治。

关键词: 阿尔茨海默症, β样淀粉蛋白, 线粒体, 肉桂醛

Abstract:

Cinnamon and its major active component, cinnamaldehyde, have been shown to be neuroprotective in models of Alzheimer’s disease (AD). To further investigate the mechanism of cinnamaldehyde, we investigated the effects of cinnamaldehyde focusing on mitochondrial function in SH-SY5Y neural cells. The results demonstrated that cinnamaldehyde could enhance neural cell viability with or without increased Aβ levels. Cinnamaldehyde facilitated the maintenance of normal mitochondrial morphology, preserved the mitochondrial membrane potential (ΔΨm), and reduced production of reactive oxygen species (ROS). Cinnamaldehyde also decreased the expression of dynamin-related protein 1 (Drp1), a protein critically involved in mitochondrial dynamics. In addition, cinnamaldehyde inhibited Aβ oligomerization, but it had no effects on Tau phosphorylation. In overall, cinnamaldehyde promoted mitochondrial function and inhibited Aβ toxicity, and these two properties may both contribute to the neuroprotective effect. These results suggest that cinnamaldehyde could be a potential nutriceutical in the prevention and even therapeutic treatment of AD as well as other aging-related metabolic syndromes.

Key words: Alzheimer’s disease, A&beta, oligomers, Mitochondria, Cinnamaldehyde

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