食品科学 ›› 2019, Vol. 40 ›› Issue (17): 202-207.doi: 10.7506/spkx1002-6630-20190320-267

• 营养卫生 • 上一篇    下一篇

大豆分离蛋白-杏鲍菇多糖共价结合物对RAW264.7细胞的免疫调节作用

吴怡亮,仲磊,马宁,裴斐,马高兴,胡秋辉   

  1. (1.南京财经大学食品科学与工程学院,江苏省现代粮食流通与安全协同创新中心,江苏高校粮油质量安全控制及深加工重点实验室,江苏?南京 210023;2.南京农业大学食品科技学院,江苏?南京 210095)
  • 出版日期:2019-09-15 发布日期:2019-09-23
  • 基金资助:
    “十三五”国家重点研发计划重点专项(2017YFD0400205);江苏高校优势学科建设工程资助项目(PAPD)

Immunoregulatory Effect of Soybean Protein Isolate-Pleurotus eryngii Polysaccharide Conjugate on RAW264.7 Cells

WU Yiliang, ZHONG Lei, MA Ning, PEI Fei, MA Gaoxing, HU Qiuhui   

  1. (1. Collaborative Innovation Center for Modern Grain Circulation and Safety, Key Laboratory of Grains and Oils Quality Control and Processing, College of Food Science and Engineering, Nanjing University of Finance and Economics, Nanjing 210023, China; 2. College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China)
  • Online:2019-09-15 Published:2019-09-23

摘要: 目的:研究大豆分离蛋白-杏鲍菇多糖共价结合物对小鼠巨噬细胞系RAW264.7的免疫调节作用。方法:将小鼠RAW264.7细胞分为空白组、脂多糖组和样品组(大豆分离蛋白、杏鲍菇多糖、大豆分离蛋白-杏鲍菇多糖混合物及共价结合物),分别测定并比较各组细胞的巨噬细胞活力、中性红吞噬活性、一氧化氮释放量、细胞因子分泌及其mRNA表达水平。结果:当质量浓度在0~50?μg/mL范围时,大豆分离蛋白、杏鲍菇多糖、大豆分离蛋白-杏鲍菇多糖混合物和大豆分离蛋白-杏鲍菇多糖共价结合物组4?种样品对细胞活力没有显著影响(P>0.05)。当大豆分离蛋白-杏鲍菇多糖共价结合物的质量浓度达到100?μg/mL时,能够显著提高细胞的中性红吞噬活性、一氧化氮释放量以及肿瘤坏死因子-α、白细胞介素1β(interleukin 1β,IL-1β)和IL-6的含量及这3 种细胞因子的mRNA表达水平(P<0.05),表明大豆分离蛋白-杏鲍菇多糖共价结合物能显著提升小鼠巨噬细胞系RAW264.7的免疫调节能力,且存在剂量依赖效应。结论:本研究可对大豆分离蛋白进行糖基化改性,为谷物蛋白的深加工和开发利用提供一定的理论依据。

关键词: 大豆分离蛋白, 大豆分离蛋白-杏鲍菇多糖共价结合物, RAW264.7细胞系, 免疫调节, 剂量依赖效应

Abstract: In the present study, we investigated the effect of a covalent conjugate between soybean protein isolate (SPI) and Pleurotus eryngii polysaccharide (PEP) conjugate on cell viability, neutral red phagocytosis activity, nitric oxide content, and the secretion and mRNA expression of cytokines in RAW264.7 cells. Untreated cells as well as those treated with lipopolysaccharides (LPS), PEP or an SPI-PEP physical mixture were used as controls. The results showed that SPI and PEP as well as their conjugate and mixture at concentrations of 0–50 μg/mL had no significant effect (P > 0.05) on the cell proliferation rate. The conjugate increased neutral red phagocysis activity, NO production and the secretion and mRNA expression of tumor necrosis factor α, interleukin 1β (IL-1β) and IL-6 at 100 μg/mL. In conclusion, soybean protein isolate-Pleurotus eryngii polysaccharide conjugate could enhance immune functions in RAW264.7 cells in a dose-dependent manner. The glycosylation modification of soybean protein can provide a basis for the deep processing and development of cereal proteins.

Key words: soybean protein isolate, soybean protein isolate-Pleurotus eryngii polysaccharide conjugate, RAW264.7 cells, immunoregulation, dose-dependent effect

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