基于HPLC指纹图谱及UPLC-Q-TOF-MS的藏药“榜间”多基原品种化学型研究

Study on Chemotype of Tibetan Medicine“Bangjian”Multi-Origin Species Based on HPLC Fingerprint and UPLC-Q-TOF-MS

目的对不同品种藏药“榜间”HPLC指纹图谱进行研究,比较分析不同品种“榜间”的化学成分差异并进行分类探讨,为其质量控制、临床安全用药提供参考。方法采用HPLC法建立不同品种的“榜间”指纹图谱,UPLC-Q-TOF-MS法分析主流品种化学成分的异同并确定特征鉴别峰,采用中药色谱指纹图谱相似度评价系统对指纹图谱数据进行相似度评价。采用化学计量学进行聚类分析(HCA)、主成分分析(PCA)、正交偏最小二乘判别分析(OPLS-DA)。结果93批“榜间”样品共鉴别出11个色谱峰。HCA与PCA可将93批“榜间”分为2类,OPLS-DA可更为细致的将其分为3类,并根据VIP>1的原则筛选出4个主要差异成分。UPLC-Q-TOF-MS和化学计量学结果表明藏药“榜间”可根据化学型分为以大花龙胆为代表的含苯甲酰基片段的环烯醚萜化学型和以蓝玉簪龙胆为代表的单环环烯醚萜化学型,其中后者根据成分含量又可分为高山龙胆组亚型和多枝组华丽系亚型。化学型分类证明“榜间”传统分类有一定的物质基础科学性但也存在纰漏。结论本次研究表明建立的HPLC指纹图谱可将复杂基原的“榜间”有效分类,以期为“榜间”质量标准的提升和临床安全用药提供有效参考。

Objective The HPLC fingerprints of different varieties of Tibetan medicine"Bangjian"were investigated to compare and analyse the differences in the chemical composition of different varieties and to further classify them,so as to provide reference for their quality control and safe clinical use.Methods HPLC method was used to establish the fingerprints of the different species of"Bangjian",and UPLC-Q-TOF-MS method was used to analyse the similarities and differences of the chemical components of the mainstream species and to identify the characteristic peaks.Chemometrics methods were used for the analysis including cluster analysis(HCA),principal component analysis(PCA)and orthogonal partial least squares discriminant analysis(OPLS-DA).Results A total of 11 chromatographic peaks were identified from 93 batches of"Bangjian"samples.The HCA and PCA methods were used to classify the 93 batches into 2 categories,and then OPLS-DA was used to classify them into 3 categories in more detail,while 4 main components were selected according to the principle of VIP>1.The results of UPLC-Q-TOF-MS and chemometric classification of the"Bangjian"has a material basis in science but were also flawed.Conclusion The present study demonstrates that the established HPLC fingerprint can be used to classify the"Bangjian"of the complex base elements effectively,which is expected to provide an effective reference for the improvement of quality standards of"Bangjian"and clinical safety medication.