Inhibitors for expression of IgE receptor on human mast cell from Puerariae Flos

Bioorganic & Medicinal Chemistry Letters
Satoru TamuraNobutoshi Murakami

Abstract

Bioassay-guided separation of the extract of the medicinal plant, Puerariae Flos, disclosed the two isoflavones tectorigenin (1) and genistein (2) as the inhibitors for expression of IgE receptor (FcepsilonRI), the key molecule triggering the allergic reactions, on human mast cells. As a result of analysis of structure-activity relationship of the naturally occurring and synthesized isoflavones, 7-O-methyl glycitein (11) was disclosed as the more potent inhibitor than tectorigenin (1). These isoflavone ingredients suppressed expression of FcepsilonRI more potently than the active flavonoids found previously. In addition, tectorigenin (1) was clarified to particularly reduce generation of gamma-chain subunit to suppress expression of FcepsilonRI among the three subunits.

Citations

Jan 29, 2011·Organic Letters·Zhenhua Gu, Armen Zakarian
Apr 10, 2012·Immunologic Research·Madhan MasilamaniHugh A Sampson
Jun 27, 2020·Journal of Food Biochemistry·Thanh Sang Vo

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