Pseudo-allergic reactions(PARs)widely occur upon application of drugs or functional foods.Anti-pseudo-allergic ingredients from natural products have attracted much attention.This study aimed to investigate anti-pseud...Pseudo-allergic reactions(PARs)widely occur upon application of drugs or functional foods.Anti-pseudo-allergic ingredients from natural products have attracted much attention.This study aimed to investigate anti-pseudo-allergic compounds in licorice.The anti-pseudo-allergic effect of licorice extract was evaluated in rat basophilic leukemia 2H3(RBL-2H3)cells.Anti-pseudo-allergic compounds were screened by using RBL-2H3 cell extraction and the effects of target components were verified further in RBL-2H3 cells,mouse peritoneal mast cells(MPMCs)and mice.Molecular docking and human MRGPRX2-expressing HEK293T cells(MRGPRX2-HEK293T cells)extraction were performed to determine the potential ligands of MAS-related G protein-coupled receptor-X2(MRGPRX2),a pivotal target for PARs.Glycyrrhizic acid(GA)and licorice chalcone A(LA)were screened and shown to inhibit Compound48/80-induced degranulation and calcium influx in RBL-2H3 cells.GA and LA also inhibited degranulation in MPMCs and increase of histamine and TNF-a in mice.LA could bind to MRGPRX2,as determined by molecular docking and MRGPRX2-HEK293T cell extraction.Our study provides a strong rationale for using GA and LA as novel treatment options for PARs.LA is a potential ligand of MRGPRX2.展开更多
Licorice （the roots of Glycyrrhiza uralensis） is widely-used in Chinese herbal compound prescriptions for its functions of nourishing qi, alleviating pain, tonifying spleen and stomach, eliminating phlegm, relieving...Licorice （the roots of Glycyrrhiza uralensis） is widely-used in Chinese herbal compound prescriptions for its functions of nourishing qi, alleviating pain, tonifying spleen and stomach, eliminating phlegm, relieving coughing, and harmonizing prescriptions. It contains more than 20 triterpenoids and approximately 300 flavonoids. In recent years, many studies have reported that it possesses various pharmacological activities, such as antitumor, antimicrobial, and antivirus effects. In this paper, the antitumor activity of licorice is deeply summarized. The antitumor active components and the possible antitumor mechanism are analyzed.展开更多
基金This work was supported by the National Natural Scientific Foundation of China(No.81903788 and 81900780).
文摘Pseudo-allergic reactions(PARs)widely occur upon application of drugs or functional foods.Anti-pseudo-allergic ingredients from natural products have attracted much attention.This study aimed to investigate anti-pseudo-allergic compounds in licorice.The anti-pseudo-allergic effect of licorice extract was evaluated in rat basophilic leukemia 2H3(RBL-2H3)cells.Anti-pseudo-allergic compounds were screened by using RBL-2H3 cell extraction and the effects of target components were verified further in RBL-2H3 cells,mouse peritoneal mast cells(MPMCs)and mice.Molecular docking and human MRGPRX2-expressing HEK293T cells(MRGPRX2-HEK293T cells)extraction were performed to determine the potential ligands of MAS-related G protein-coupled receptor-X2(MRGPRX2),a pivotal target for PARs.Glycyrrhizic acid(GA)and licorice chalcone A(LA)were screened and shown to inhibit Compound48/80-induced degranulation and calcium influx in RBL-2H3 cells.GA and LA also inhibited degranulation in MPMCs and increase of histamine and TNF-a in mice.LA could bind to MRGPRX2,as determined by molecular docking and MRGPRX2-HEK293T cell extraction.Our study provides a strong rationale for using GA and LA as novel treatment options for PARs.LA is a potential ligand of MRGPRX2.
基金Beijing Project for Young Talents(YETP0819)Independent Subject of Beijing University of Chinese Medicine(522/010060511)
文摘Licorice （the roots of Glycyrrhiza uralensis） is widely-used in Chinese herbal compound prescriptions for its functions of nourishing qi, alleviating pain, tonifying spleen and stomach, eliminating phlegm, relieving coughing, and harmonizing prescriptions. It contains more than 20 triterpenoids and approximately 300 flavonoids. In recent years, many studies have reported that it possesses various pharmacological activities, such as antitumor, antimicrobial, and antivirus effects. In this paper, the antitumor activity of licorice is deeply summarized. The antitumor active components and the possible antitumor mechanism are analyzed.
