Abstract
Radix Salviae Miltiorrhiae (also known as DanShen (DS) in China), a popular herbal drug in traditional Chinese medicine (TCM) for promoting blood circulation and treating blood stasis, has been reported to possess potential anti-tumor effects. The aim of the study was to develop an effective and practical method for screening and identifying bioactive compounds from Radix Salviae Miltiorrhiae. In this work, the epidermal growth factor receptor (EGFR) and fibroblast growth factor receptors 4 (FGFR4) dual-mixed/cell membrane chromatography (CMC) coupled with high performance liquid chromatography-electrospray ionization-ion trap-time of flight-multistage mass spectrum (HPLC-ESI-IT-TOF-MSn) was established and successfully used to identify the active components from Radix Salviae Miltiorrhiae. Salvianolic acid C (SAC), tanshinone I (Tan-I), tanshinone IIA (Tan-IIA), and cryptotanshinone (C-Tan) were identified as bioactive components with EGFR and FGFR4 activities. MTT and kinase assay were performed to investigate inhibitory effects of these compounds against EGFR and FGFR4 cells growth in vitro. Both cell viability and kinase activity showed that cryptotanshinone acting on EGFR receptor and tanshinone IIA acting on FGFR4 receptor. In conclusion, the EGFR & FGFR4 dual-mixed/CMC can simultaneously screen the bioactive components from TCMs that act on both EGFR and FGFR4 receptors, which significantly improve the efficiency of specific bioactive components identification from a complex system.
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