Discovery and analysis the anti-pseudo-allergic components from Perilla frutescens leaves by overexpressed MRGPRX2 cell membrane chromatography coupled with HPLC-ESI-IT-TOF system.

The Journal of Pharmacy and Pharmacology
Liu YangNan Wang

Abstract

Screen and identify the anti-pseudo-allergic activity components of Perilla frutescens leaves that interacted with MRGPRX2 (a new reported pseudo-allergic reaction-related receptor). An overexpressed MRGPRX2 cell membrane chromatography (CMC) coupled with HPLC-ESI-IT-TOF system has been established to screen and identify the effective components from P. frutescens leaves. A frontal analysis method was performed to investigate the binding affinity between ligands and MRGPRX2. Their activity of relieving pseudo-allergic reaction was evaluated in vitro by histamine release assay, β-hexosaminidase release assay and intracellular Ca2+ mobilization assay. Extract of P. frutescens leaves was proved to be effective in anti-pseudo-allergic reaction by inhibiting MRGPRX2. Apigenin (API) and rosmarinic acid (ROS) were confirmed to be the potential anti-allergy compounds that could bind with MRGPRX2. The binding affinity (KD ) of ROS and API with MRGPRX2 was (8.79 ± 0.13) × 10-8  m and (6.54 ± 1.69) × 10-8  m, respectively. The IC50 of API inhibiting laboratory of allergic disease 2 cells degranulation was also determined to be (51.96 ± 0.18) μm. A MRGPRX2/CMC coupled with HPLC-ESI-IT-TOF system was successfully established and applied to ...Continue Reading

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Citations

Jan 27, 2021·Journal of Pharmaceutical and Biomedical Analysis·Jiao CaoLangchong He
Feb 7, 2021·Journal of Chromatography. a·Weina MaLangchong He

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