天然产物研究与开发 ›› 2021, Vol. 33 ›› Issue (增刊2): 32-37.

• 研究论文 • 上一篇    下一篇

槲皮素和槲皮素-3-O-β-D-葡萄糖醛酸苷对SH-SY5Y细胞分化神经元损伤的保护作用研究

付洋洋1,3,马筱2,胡娜1,王洪伦1*


  

  1. 1中国科学院西北高原生物研究所 中国科学院藏药研究重点实验室,西宁810008;2西安交通大学第一附属医院转化医学中心,西安710048;3中国科学院大学,北京100049

  • 出版日期:2021-12-28 发布日期:2021-11-23
  • 基金资助:
    青海省自然科学基金面上项目(2020-ZJ-905);青海省创新平台专项(2021-ZJ-T05)

Protective effects of quercetin and quercetin-3-O-β-D-glucuronide on okadaic acid induced neuron injury of differentiated SH-SY5Y neuroblastoma cells 

FU Yang-yang1,3,MA Xiao2,HU Na1,WANG Hong-lun1*   

  1. 1Key Laboratory of Tibetan Medicine Research,Northwest Institute of Plateau Biology,Chinese Academy of Sciences,Xining 810008,China;2Translational Medicine Center of the First Affiliated Hospital of Xi'an Jiaotong University,Xi'an 710048,China;3 University of Chinese Academy of Sciences,Beijing 100049,China

  • Online:2021-12-28 Published:2021-11-23

摘要:

本研究将人神经母细胞瘤SH-SY5Y诱导分化为成熟的神经元细胞,进一步利用冈田酸(OA)建立Tau蛋白过度磷酸化的细胞模型,探讨槲皮素和槲皮素-3-O-β-D-葡萄糖醛酸苷的神经保护作用。通过MTT法检测细胞活力,Giemsa染色法观察细胞形态的变化,Western blot检测Tau蛋白(Ser396和Ser262位点)磷酸化的程度,DCFH-DA检测细胞内ROS的水平,化学发光法检测ATP的含量。实验结果表明槲皮素和槲皮素-3-O-β-D-葡萄糖醛酸苷可以能通过降低细胞内ROS的产生,提高ATP的含量,从而抑制Tau过度磷酸化,同时发现槲皮素的保护作用强于槲皮素-3-O-β-D-葡萄糖醛酸苷。

关键词: 槲皮素, 槲皮素-3-O-β-D-葡萄糖醛酸苷, SH-SY5Y, Tau蛋白磷酸化

Abstract:

Human neuroblastoma SH-SY5Y was induced to differentiate into mature neuronal cells,and the cell model of Tau hyperphosphorylation was further established by okadaic acid (OA) to investigate the protective effect of quercetin and quercetin-3-O-β-D-glucuronide.The cell viability was measured by MTT.Morphological changes of SH-SY5Y cells were observed by Giemsa staining.The degree of phosphorylation of Tau protein (Ser396,Ser262) was detected by Western blot.Intracellular reactive oxygen species (ROS) levels in cells were measured by flow cytometry.The variations of ATP content in cells were detected by chemiluminescence.The results showed quercetin and quercetin-3-O-β-D-glucuronide decreased intracellular ROS production and increased ATP content,leading to attenuate Tau hyperphosphorylation.In addition,the neuroprotective effect of quercetin exhibited stronger than that of quercetin-3-O-β-D-glucuronide.

Key words: quercetin, quercetin-3-O-β-D-glucuronide, SH-SY5Y cells, Tau phosphorylation

中图分类号:  R285.5