Gao X, Yang L, Bai Y, Li Q, Zhao X, Bian L, Zheng X. Screening of bioactive components from traditional Chinese medicine by immobilized β
2 adrenergic receptor coupled with high performance liquid chromatography/mass spectrometry.
J Chromatogr B Analyt Technol Biomed Life Sci 2019;
1134-1135:121782. [PMID:
31778946 DOI:
10.1016/j.jchromb.2019.121782]
[Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2019] [Revised: 08/27/2019] [Accepted: 08/29/2019] [Indexed: 10/26/2022]
Abstract
Traditional Chinese medicine (TCM) represents a valuable resource for lead compounds discovery. Given the complexity of TCM components, analytical methods play a key role in novel drug development. In our study, we established a high specific and reliable bio-active components screen system, where β2 adrenergic receptor (β2-AR) was immobilized on silica by non-covalent bonds and packed into a stainless steel column (4.6 × 50 mm, 7 μm) to form β2-AR chromatography column. The column was further coupled with high performance liquid chromatography-time of flight tandem mass spectrometry (TOF-MS/MS). By utilizing this strategy, we successfully identified four β2-AR-targeting compounds: tetrahydroberberine, tetrahydrocolumbamine, fumarine and corydaline from Corydalis Rhizome. The association constants between β2-AR and tetrahydroberberine (9.04 × 104/M) as well as fumarine (4.30 × 104/M) were determined by frontal chromatography. We also found that these two compounds shared the identical binding site on immobilized β2-AR with corresponding concentrations of 6.67 × 10-4 M and 5.88 × 10-4 M, respectively. The newly established method represents an efficient tool to identify the target specific natural compounds.
Collapse