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来自Prunus mume的黑色素-果汁缩物:在免疫调节活动中的极性驱动差异
Yunjie Su1, Qian Yang1, Zhong Li2
1College of Food Science and Engineering, Nanjing University of Finance and Economics/Collaborative Innovation Center for Modern Grain Circulation and Safety, Nanjing, China.
来自Prunus mume果汁缩物 (PFC) 的黑色素素因其极性而表现出不同的免疫激活作用. 该研究揭示了与抗氧化,化和免疫调节活动相关的独特结构特征,特别是通过MAPK通路.
科学领域:
- 食品科学与技术 食品科学与技术
- 营养药和功能性食品 营养药和功能性食品
- 免疫学和分子生物学
背景情况:
- 梅拉诺因是Prunus mume果汁缩剂 (PFC) 中的关键成分,具有促进健康的特性,但其物理化学特征和生物活性尚未完全理解.
- 关于PFC黑色素的有限知识阻碍了其功能价值的充分利用,需要进一步研究它们的结构-活性关系.
研究的目的:
- 以极性为基础,从PFC中分离和描述黑色素素素分数.
- 评估这些分量的抗氧化剂,Fe2+化和免疫调节活性.
- 阐明它们免疫调节作用的潜在分子机制.
主要方法:
- 隔离了三种黑色素素分数 (PFCM1,PFCM2,PFCM3) 使用宏树脂染色学与连续化.
- 物理化学分析包括总碳水化合物,,蛋白质,单糖和氨基酸含量的确定.
- 评估抗氧化剂和Fe2+合活性,在RAW264.7细胞的体外免疫调节试验 (细胞,NO,细胞因子分泌),以及转录组/西欧斑点分析.
主要成果:
- 分数显示极性与碳水化合物,和蛋白质含量之间的反相关性;极性的增加导致单糖和氨基酸的减少.
- 抗氧化活性和Fe2+化能力随着黑色素二极性增加而下降.
- 所有分离物都增强了RAW264.7细胞细胞和NO,TNF-α,IL-1β和IL-6的分泌;PFCM3通过TLR2/4介导的MAPK通路表现出最强的免疫调节作用.
结论:
- 极性是影响PFC黑色素素的结构特征和生物活性的关键因素.
- 来自PFC的黑色素素显示出显著的免疫调节潜力,通过特定的信号通路起作用.
- 这项研究提供了PFC黑色素的功能价值的见解,支持其作为生物活性成分的应用.
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