中国临床解剖学杂志 ›› 2016, Vol. 34 ›› Issue (3): 308-311.doi: 10.13418/j.issn.1001-165x.2016.03.015

• 实验研究 • 上一篇    下一篇

维生素C对大鼠背根神经节神经元突起生长的影响

李媛媛1, 文锦坤1, 潘梦婕1, 李莉霞1, 王祥海1, 钱长晖1, 郭家松1,2   

  1. 1.南方医科大学基础医学院组织学与胚胎学教研室,  广州   510515;
    2.广东省组织工程构建与检测重点实验室,  广州   510515
  • 收稿日期:2016-02-23 出版日期:2016-05-25 发布日期:2016-06-17
  • 通讯作者: 郭家松,教授,博士生导师,E-mail: jiasongguo@aliyun.com
  • 作者简介:李媛媛(1990-),女,福建人,在读硕士,Tel:18620576070,E-mail: yyuan1229@163.com
  • 基金资助:

    科技部973项目(2014CB542202);国家自然科学基金 (81371354, 81571182); 广东省科技计划项目 (2015A020212024); 广东省自然科学基金 (S2013010014697)

The effect of vitamin C on the neurite outgrowth of dorsal root ganglionic neurons

LI Yuan-yuan1, WEN Jin-kun1, PAN Meng-jie1, LI Li-xia 1, WANG Xiang-hai1, QIAN Chang-hui1, GUO Jia-song 1,2   

  1. 1.Department of Histology and Embryology, Southern Medical University, Guangzhou 510515 China; 2.Key Laboratory of Tissue Construction and Detection of Guangdong Province, Guangzhou 510515,China
  • Received:2016-02-23 Online:2016-05-25 Published:2016-06-17

摘要:

目的 研究维生素C(Vitamin C,Vit.C)对大鼠背根神经节神经元轴突生长的影响,为探讨神经再生新策略提供基础。  方法 取新生SD大鼠背根神经节(dorsal root ganglion, DRG)进行神经元分离培养。在培养液中加入不同浓度的维生素C(0, 100, 200, 400 μmol/L)处理24 h后通过βIII tubulin, RhoA免疫组化以及鬼笔环肽染色对神经元突起的数量和长度、生长锥伪足数量、神经元胞体大小及其内RhoA表达强度进行分析。  结果    神经元突起的数量、长度,生长锥伪足的数量以及神经元胞体面积均随维生素C的浓度增高而增长,而神经元内RhoA表达强度则相应降低。  结论    维生素C可促进体外大鼠背根节神经元突起的生长,这可能与RhoA表达下调相关。

关键词: 维生素C, 神经元, 突起生长, RhoA 

Abstract:

Objective To study the effect of Vitamin C on the neurite outgrowth of dorsal root ganglionic neurons. Methods Neurons harvested from the dorsal root ganglion of newborn SD rat pups were cultured in a basic medium supplemented with a series of concentration of Vitamin C (0, 100, 200, 400μmol/L). 24 hours later, the cultures were immunostained with antibodies of βIII tubulin and RhoA. The βIII tubulin immunostained cultures were double stained with phalloidin. Then, the number and length of the neurites, number of pseudopodium in the growth cone of the cultured neurons, as well as the immunofluorence intensity of RhoA in the neuronal bodies were quantified. Results The number and length of the neurites, number of pseudopodium in the growth cone of the cultured neurons were all increased in Vit. C treated groups compared with the control group. Howerver, the RhoA level was decreased in the Vit. C treated groups. Conclusion Vit.C could promote the neurite outgrowth of cultured dorsal root ganglionic neurons which may result in reducing the expression of RhoA.

Key words: Vitamin C, Neuron, Neuriteougrowth, RhoA