摘要
Anoectochilus chapaensis Gagnep. （Orchidaceae） was named as the ＂king of medicine＂ because of its excellent efficacy for the treatment of diabetes. However, the bioactive constituents are unknown. An ethanol extract from A. chapaensis showed significant stimulating effect on glucose consumption in HepG2 cells. The chemical composition was investigated by UPLC-MS/MS in negative electrospray ionization （ESI） mode, and 63 compounds including flavonoids, triterpenoids, and aliphatic acids were tentatively identified by accurate mass and characteristic fragments. Moreover, the method of hypoglycemic screening with insulin resistant HepG2 cells and UPLC-MS/MS might be potentially useful in rapid and efficient characterization and primary prediction of natural products prior to traditional isolation.
民间俗称"药王"的滇越金线兰对治疗糖尿病有很好的疗效,但其活性成分的系统分析还未见报道。本研究将滇越金线兰粗提物作用于胰岛素抵抗的HepG2细胞,可显著促进细胞的葡萄糖摄取。应用超高效液相色谱串联质谱法(UPLC-MS/MS)快速分析滇越金线兰中的化学成分,通过保留时间、质谱精确分子量和特征碎片推定出63种成分,包括黄酮类、三萜和脂肪族化合物,结合胰岛素抵抗的HepG2对提取物进行降血糖活性筛选,采用UPLC-MS/MS快速进行成分分析,证明是一种可行且可靠的分离和鉴定中药中活性成分的方法。
基金
Pearl River Nova Program of Guangzhou 2015(Grant No.201506010061)
Foundation for Distinguished Young Teachers in Higher Education of Guangdong(Grant No.YQ2015097)
National Natural Science Foundation of China(Grant No.81001628)
