Biomolecules & Therapeutics  2015;23(5):421-427

doi:10.4062/biomolther.2015.023

Imperatorin Suppresses Degranulation and Eicosanoid Generation in Activated Bone Marrow-Derived Mast Cells.

Kyu Tae JEONG 1 ; Eujin LEE ; Na Young PARK ; Sun Gun KIM ; Hyo Hyun PARK ; Jiean LEE ; Youn Ju LEE ; Eunkyung LEE

Affiliations

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Keywords

Leukotriene C4; Prostaglandin D2; Cytosolic phospholipase A2; Mitogen-activated protein kinases; Phospholipase Cgamma1

Country

Republic of Korea

Language

English

Abstract

Imperatorin has been known to exert many biological functions including anti-inflammatory activity. In this study, we investigated the inhibitory effects of imperatorin on the production of inflammatory mediators in mouse bone marrow-derived mast cells (BMMC). Imperatorin inhibited degranulation and the generation of eicosanoids (leukotriene C4 (LTC4) and prostaglandin D2 (PGD2)) in IgE/antigen (Ag)-stimulated BMMC. To elucidate the molecular mechanism involved in this process, we investigated the effect of imperatorin on intracellular signaling in BMMC. Biochemical analyses of the IgE/Ag-mediated signaling pathway demonstrated that imperatorin dramatically attenuated degranulation and the production of 5-lipoxygenase-dependent LTC4 and cyclooxygenase-2-dependent PGD2 through the inhibition of intracellular calcium influx/phospholipase Cgamma1, cytosolic phospholipase A2/mitogen-activated protein kinases and/or nuclear factor-kappaB pathways in BMMC. These results suggest that the effects of imperatorin on inhibition of degranulation and eicosanoid generation through the suppression of multiple steps of IgE/Ag-mediated signaling pathways would be beneficial for the prevention of allergic inflammation.