食品科学

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大粒车前子多糖对脂多糖刺激RAW264.7巨噬细胞的免疫调节作用

李芬芬,黄丹菲,江乐明,谢明勇*   

  1. 南昌大学 食品科学与技术国家重点实验室,江西 南昌 330047
  • 发布日期:2014-12-15

Immunoregulatory Effect of Polysaccharide from the Seeds of Plantago asiatica L. on RAW264.7 Cells Stimulated with Lipopolysaccharide

LI Fen-fen, HUANG Dan-fei, JIANG Le-ming, XIE Ming-yong*   

  1. State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
  • Published:2014-12-15

摘要:

采用脂多糖构建RAW264.7巨噬细胞炎症模型,研究大粒车前子多糖的抗炎作用。培养巨噬细胞RAW264.7,利用脂多糖构建细胞炎症模型,中性红吞噬实验检测细胞吞噬活性;酶联免疫吸附法检测车前子精制多糖(Plantago asiatica L. crude polysaccharide,PLCP)处理前后细胞上清液中肿瘤坏死因子-α(tumor necrosisfactor-α,TNF-α)、白细胞介素-10(interleukin-10,IL-10)和IL-6的分泌量,Griess反应测定RAW264.7细胞释放NO水平。结果表明,PLCP可显著抑制RAW264.7炎症细胞的吞噬活性,降低炎症细胞因子TNF-α、IL-10和IL-6的分泌量及NO的释放量。

关键词: 大粒车前子, 多糖, RAW264.7巨噬细胞, 炎症, 抗炎

Abstract:

To study the immunoregulatory effect of polysaccharide from the seeds of Plantago asiatica L. on RAW264.7
cells, a model of inflammation stimulated with lipopolysaccharide (LPS) was established. The phagocytic activity of the cells
was observed by neutral red phagocytosis experiments. At the same time, the levels of TNF-α, IL-10 and IL-6 in the cultural
supernatant were quantified before and after addition of crude polysaccharide from Plantago asiatica L. (PLCP) by ELISA.
In addition, the expression of NO which was suppressed by the polysaccharide was studied. The results showed that the
polysaccharide could suppress cytokine levels, NO expression and phagocytic activity.

Key words: Plantago asiatica L., polysaccharide, RAW264.7 cells, inflammation, anti-inflammation

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