21-Methylmelianodiols from Poncirus trifoliata as inhibitors of interleukin-5 bioactivity in Pro-B cells.

Abstract:

:Interleukin (IL)-5 plays an important role in the progression of allergic inflammation. Here, we have isolated 21alpha-methylmelianodiol and 21beta-methylmelianodiol from Poncirus trifoliata (L.) Raf., a plant of the Rutaceae family, as the inhibitors of IL-5-dependent growth of Y16 pro-B cells by bioassay-guided fractionation. 21alpha-Methylmelianodiol and 21beta-methylmelianodiol inhibited IL-5-dependent growth of Y16 cells in a dose-dependent manner with IC (50) values of 17 microM and 15 microM, respectively. A positive control, tyrphostin AG-490, exhibited an IC (50) value of 23 microM on IL-5 bioactivity. Further, we have documented that 21alpha-methylmelianodiol and 21beta-methylmelianodiol cause G1 arrest of IL-5-induced cell cycle progression of Y16 cells, and also reduce IL-5-dependent survival of the cells by apoptosis. This study could provide a pharmacological potential for P. trifoliata in treatment of IL-5-associated inflammatory disorders.

journal_name

Planta Med

journal_title

Planta medica

authors

Lee IJ,Xu GH,Ju JH,Kim JA,Kwon SW,Lee SH,Han SB,Kim Y

doi

10.1055/s-2008-1034329

subject

Has Abstract

pub_date

2008-03-01 00:00:00

pages

396-400

issue

4

eissn

0032-0943

issn

1439-0221

journal_volume

74

pub_type

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