食品科学 ›› 2013, Vol. 34 ›› Issue (21): 344-348.

• 营养卫生 • 上一篇    下一篇

海带多糖对大鼠血管平滑肌细胞凋亡的影响

彭臻菲1,2,方哲翔1,刘 敏1,陈 立1,张其清1,*   

  1. 福州大学
  • 收稿日期:2012-11-21 修回日期:2013-09-25 出版日期:2013-11-15 发布日期:2013-10-28
  • 通讯作者: 彭臻菲 E-mail:bioenglab@163.com
  • 基金资助:

    福建省科技重大专项专题;福州大学科研启动基金

Apoptosis induction on rat vascular smooth muscle cells of Laminaria japonica polysaccharide

PENG Zhen-fei1,2,FANG Zhe-xiang1,LIU Min1,CHEN Li1,ZHANG Qi-qing1,*   

  • Received:2012-11-21 Revised:2013-09-25 Online:2013-11-15 Published:2013-10-28
  • Contact: Zhen-fei PENG E-mail:bioenglab@163.com

摘要:

目的:研究海带多糖诱导血管平滑肌细胞凋亡及其调控作用及其作用机制。方法:在碱性成纤维细胞生长因子诱导血管平滑肌细胞增殖模型基础上,运用MTT法考察海带多糖对VSMC细胞增殖的抑制作用;利用荧光倒置显微镜观察血管平滑肌细胞形态学的变化;通过流式细胞术分析血管平滑肌细胞周期的分布;采用Western-blot免疫印迹法探讨血管平滑肌细胞凋亡相关蛋白Bax和Bcl-2的表达。结果:海带多糖对血管平滑肌细胞增殖抑制呈量效相关性。细胞形态学观察结果及流式、Western-blot免疫印记分析结果表明海带多糖可诱导血管平滑肌细胞凋亡。其凋亡机制与其诱导细胞周期阻滞于S期以及提高Bax/Bcl-2比率有关。结论:海带多糖可诱导平滑肌细胞凋亡。

Abstract:

Purpose: To study the mechanism of apoptosis induced by Laminaria japonica polysaccharide. Methods: The proliferation of vascular smooth muscle cells induced by basic fibroblast growth factor (bFGF) was evaluated using MTT assay; The morphological changes of vascular smooth muscle cells were investigated by fluorescence microscope; The cell cycle distribution of vascular smooth muscle cells was determined using flow cytometry; The apoptotic factors were evaluated by Western-blot assay. Results: Laminaria japonica polysaccharide exhibited anti-proliferative activity on vascular smooth muscle cells in a dose-dependent manner. Further investigation indicated that Laminaria japonica polysaccharide induced vascular smooth muscle cells apoptosis. The apoptotic mechanism was related to the induction of S phase arrest, as well as regulating Bcl-2 family proteins expressions. Conclusions: Laminaria japonica polysaccharide could induce apoptosis.

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