基础医学与临床 ›› 2016, Vol. 36 ›› Issue (10): 1359-1363.

• 研究论文 • 上一篇    下一篇

APS通过PI3K/AKT信号通路促进神经干细胞增殖

郑利强1,江琼2,伍亚民3,石永江4,查倩2   

  1. 1. 重庆医科大学中医药学院
    2. 重庆医科大学
    3. 第三军医大学大坪医院野战外科研究所三室,创伤、烧伤与复合伤国家重点实验室
    4. 解放军后勤工程学院 门诊部
  • 收稿日期:2015-08-17 修回日期:2016-03-25 出版日期:2016-10-05 发布日期:2016-09-27
  • 通讯作者: 江琼 E-mail:jq.ok@163.com
  • 基金资助:
    国家自然科学基金

Astragalus polysaccharide(APS) promote the proliferation of neural stem cells (NSCs) through the PI3K / AKT signaling pathway

  • Received:2015-08-17 Revised:2016-03-25 Online:2016-10-05 Published:2016-09-27
  • Supported by:
    National Natural Science Foundation of China

摘要: 目的 观察APS是否通过PI3K/AKT信号通路促进神经干细胞增殖。方法 将神经干细胞,随机分为对照组、APS(5%)组、APS(5%)+LY294002组和LY294002组,用间接免疫荧光法检测Nestin和Brdu;CCK-8检测细胞增殖;Elisa检测VEGF、FLK-1含量;Western blot法检测FLK-1、PI3K、P-Akt蛋白表达。结果 APS可以提高LY294002干预后神经干细胞增殖(P<0.05),提高VEGF、FLK-1含量(P<0.05),提高FLK-1、PI3K、P-Akt蛋白表达(P<0.05)。结论 APS可能通过促进Akt磷酸化,活化PI3K/AKT信号通路,调节PI3K/AKT信号通路下游靶基因,促进神经干细胞增殖。

关键词: VEGF, FLK-1, PI3K, P-Akt, 增殖

Abstract: Objective To observe the effect of astragalus polysaccharide on the proliferation of neural stem cells through FLK-1/PI3K/AKT signaling pathway.Methods neural stem cells were randomly divided into control group, APS (5%) group, APS (5%) +LY294002 group, LY294002 group,we detected the expression of Nestin and Brdu;Testing the cell proliferation by CCK-8;the content of VEGF,Flk-1 by Elisa,and the protein expression of Flk-1、PI3K、p-Akt by Western blot. Results The proliferation of neural stem cells in APS group and LY294002 group were significantly different (P < 0.05), APS can improve the proliferation of neural stem cells after LY294002 intervention, and increase the content of VEGF, FLK-1 and FLK-1, P-Akt and PI3K protein expression (PC).Conclusion APS group can promote the proliferation of neural stem cells,maybe relation with improve the content of VEGF,FLK-1,promote the expression of FLK-1 protein expression, Akt phosphorylation, activate PI3K/AKT signaling pathway, regulate the downstream target genes of PI3K/AKT signaling pathway.

Key words: VEGF, FLK-1, PI3K, P-Akt, proliferation

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