Synthesis and evaluation of new potential anti-pseudo-allergic agents

Bioorg Med Chem Lett. 2022 Jan 19:128575. doi: 10.1016/j.bmcl.2022.128575. Online ahead of print.ABSTRACTPseudo-allergic reactions frequently occur following clinical drug use and sometimes even cause mortal danger. Mas-related G-protein-coupled receptor member X2 (MRGPRX2) is a novel receptor that mediates pseudo-allergy and is an important target in the treatment of allergies. However, to date, there are no synthetic small-molecule inhibitors that prevent anaphylactoid reactions through this pathway. Our preliminary research suggested that B10-S and mubritinib effectively inhibited LAD2 cells. Therefore, two novel derivatives were synthesized by integrating the active substructures of B10-S and mubritinib, according to the molecular docking results. The antiallergic inhibitory effects of the two compounds were preliminarily evaluated in vitro using β-hexosaminidase release, histamine release, and intracellular Ca [2]+ mobilization assays, and their binding sites on MRGPRX2 were analyzed by molecular docking. Both substances inhibited β-hexosaminidase and histamine release in LAD2 cells and decreased intracellular Ca [2]+ by inhibiting MRGPRX2 in MRGPRX2-HEK293 cells treated with C48/80 in a dose-dependent manner. The docking results suggested that the molecules could competitively bind to the active site on MRGPRX2 and Glu141, which were combined by C48/80. Our study indicated that the two compounds have potential anti-allergic properties, which may provide evidence that ...
Source: Bioorganic and Medicinal Chemistry Letters - Category: Chemistry Authors: Source Type: research