title: Inhibition of trypsin-induced mast cell activation by water fraction of Lonicera japonica.
abstract: Lonicera japonica Thunb.(Caprifoliaceae) has long been known as an anti-inflammatory. In the present study, the effect of water fraction of Lonicera japonica (LJ) on trypsin-induced mast cell activation was examined. HMC-1 cells were stimulated with trypsin (100 nM) in the presence or absence of LJ (10, 100, and 1000 microg/mL). TNF-alpha and tryptase production were measured by enzyme-linked immunosorbent assay (ELISA) and reverse transcription-PCR. Extracellular signal-regulated kinase (ERK) phosphorylation was assessed by Western blot. Trypsin activity was measured by using Bz-DL-Arg-p-nitroanilide (BAPNA) as substrate. LJ (10, 100, and 1000 microg/mL) inhibited TNF-alpha secretion in a dose-dependent manner. LJ (10, 100, and 1000 microg/mL) also inhibited TNF-alpha and tryptase mRNA expression in trypsin-stimulated HMC-1. Furthermore, LJ inhibited trypsin-induced ERK phosphorylation. However, LJ did not affect the trypsin activity even 1000 microg/mL. These results indicate that LJ may inhibit trypsin-induced mast cell activation through the inhibition of ERK phosphorylation than the inhibition of trypsin activity.
authors.affiliation: Department of Oriental Pharmacy, College of Pharmacy, Wonkwang University, Iksan, Jeonbuk 570-749, Korea.
authors.forename: Ok-Hwa
authors.initials: OH
authors.lastname: Kang
authors.forename: Yeon-A
authors.initials: YA
authors.lastname: Choi
authors.forename: Hye-Jung
authors.initials: HJ
authors.lastname: Park
authors.forename: Joo-Young
authors.initials: JY
authors.lastname: Lee
authors.forename: Dae-Ki
authors.initials: DK
authors.lastname: Kim
authors.forename: Suck-Chei
authors.initials: SC
authors.lastname: Choi
authors.forename: Tae-Hyun
authors.initials: TH
authors.lastname: Kim
authors.forename: Yong-Ho
authors.initials: YH
authors.lastname: Nah
authors.forename: Ki-Jung
authors.initials: KJ
authors.lastname: Yun
authors.forename: Suck-Jun
authors.initials: SJ
authors.lastname: Choi
authors.forename: Young-Ho
authors.initials: YH
authors.lastname: Kim
authors.forename: Ki-Hwan
authors.initials: KH
authors.lastname: Bae
authors.forename: Young-Mi
authors.initials: YM
authors.lastname: Lee
mesh_terms: D045744:Cell Line, Tumor; D002470:Cell Survival / Q000187:drug effects; D004305:Dose-Response Relationship, Drug; D004797:Enzyme-Linked Immunosorbent Assay; D048049:Extracellular Signal-Regulated MAP Kinases / Q000378:metabolism; D015870:Gene Expression / Q000187:drug effects; D006801:Humans; D007946:Leukemia, Mast-Cell / Q000235:genetics / Q000378:metabolism / Q000473:pathology; D031239:Lonicera / Q000737:chemistry*; D010766:Phosphorylation / Q000187:drug effects; D010936:Plant Extracts / Q000737:chemistry / Q000494:pharmacology*; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism; D020133:Reverse Transcriptase Polymerase Chain Reaction; D012697:Serine Endopeptidases / Q000235:genetics; D014357:Trypsin / Q000378:metabolism / Q000494:pharmacology*; D053802:Tryptases; D014409:Tumor Necrosis Factor-alpha / Q000235:genetics / Q000378:metabolism; D014867:Water / Q000737:chemistry
chemical_list: D010936:Plant Extracts; D012333:RNA, Messenger; D014409:Tumor Necrosis Factor-alpha; D014867:Water; D048049:Extracellular Signal-Regulated MAP Kinases; D012697:Serine Endopeptidases; D014357:Trypsin; D053802:Tryptases