'Force iteration molecular designing' strategy for the systematic characterization and discovery of new protostane triterpenoids from Alisma Rhizoma by UHPLC/LTQ-Orbitrap-MS
| Autor: | Zhenwei Li, Wanying Wu, De-An Guo, Wenyong Wu, Hua Qu, Xu Jin, Yong Huang, Jianqing Zhang, Qinghao Jin, Chen Liu, Shuai Yao, Yaling An, Changliang Yao, Jingyuan Song, Wenlong Wei |
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| Rok vydání: | 2021 |
| Předmět: |
biology
Computer science 010401 analytical chemistry Orbitrap ms 02 engineering and technology Computational biology 021001 nanoscience & nanotechnology biology.organism_classification 01 natural sciences Biochemistry 0104 chemical sciences Analytical Chemistry Characterization (materials science) Triterpenoid Alisma 0210 nano-technology Hybrid data |
| Zdroj: | Analytical and Bioanalytical Chemistry. 413:1749-1764 |
| ISSN: | 1618-2650 1618-2642 |
| DOI: | 10.1007/s00216-020-03145-y |
| Popis: | Comprehensive analysis and identification of chemical components are of great significance for evaluating the efficacy and safety of herbal medicines, as well as for drug exploitation and development. Here we developed a "force iteration molecular designing" strategy, by combing a database-based in-house software for a precursor ion list (PIL) and PIL-triggered collision-induced dissociation-MS2 and high-energy C-trap dissociation-MS2 (PIL-CID/MS2-HCD/MS2) on an LTQ-Orbitrap mass spectrometer, aiming for the systematic characterization and discovery of new protostane triterpenoids (PTs) from Alisma Rhizoma (AR). AR was a well-known herbal remedy widely used for diarrhea, but its systematic characterization and comparison between two botanical origins have not been reported. Firstly, in-house software was developed based on force iteration, to generate a PIL that contains 483 accurate precursor ions. Secondly, to facilitate the acquisition of rich fragments and diagnostic ions sufficient for the structural elucidation of different types of PTs, a hybrid data acquisition method, namely PIL-CID/MS2-HCD/MS2, was generated. Thirdly, a total of 473 PTs were rapidly characterized from two botanical origins of AR according to an established four-step interpretation method, and the common constituents were 277 with ratio 70% (277/395) and 78% (277/355) in the rhizome of Alisma plantago-aquatica and A. orientale, respectively. Finally, two new PTs were isolated and unambiguously identified by NMR verifying the feasibility of this combined data acquisition strategy. This integrated strategy could improve the efficiency in the detection of new compounds in a single run and is practical to comprehensively characterize the complex components in herbal medicines. |
| Databáze: | OpenAIRE |
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