Cytopiloyne, a novel polyacetylenic glucoside from Bidens pilosa, functions as a T helper cell modulator

doi:10.1016/j.jep.2006.10.007

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Title:	Cytopiloyne, a novel polyacetylenic glucoside from Bidens pilosa, functions as a T helper cell modulator
Authors:	Yi-Ming Chiang Cicero Lee-Tian Chang Shu-Lin Chang Wen-Chin Yang Lie-Fen Shyur
Contributors:	藥物科技研究所
Keywords:	Bidens pilosa Polyacetylenic glucoside T cell differentiation
Date:	2007-04
Issue Date:	2010-01-15 14:39:41 (UTC+8)
Publisher:	Elsevier Ireland Ltd
Abstract:	An extract of Bidens pilosa, an anti-diabetic Asteraceae plant, has recently been reported to modulate T cell differentiation and prevent the development of non-obese diabetes (NOD) in NOD mice. In this paper, a novel bioactive polyacetylenic glucoside, cytopiloyne (1), was identified from the Bidens pilosa extract using ex vivo T cell differentiation assays based on a bioactivity-guided fractionation and isolation procedure. Its structure was elucidated as 2β-d-glucopyranosyloxy-1-hydroxytrideca-5,7,9,11-tetrayne by various spectroscopic methods. Functional studies showed that cytopiloyne was able to inhibit the differentiation of naïve T helper (Th0) cells into type I T helper (Th1) cells but to promote the differentiation of Th0 cells into type II T helper (Th2) cell. Accordingly, cytopiloyne also suppressed IFN-γ expression and promoted IL-4 expression in mouse splenocytes ex vivo. These results suggest that cytopiloyne functions as a T cell modulator that may directly contribute to the ethnopharmacological effect of Bidens pilosa extract on preventing diabetes. Moreover, cytopiloyne can serve as an index compound for quality control of lot-to-lot extract preparations of Bidens pilosa.
Relation:	Journal of Ethnopharmacology 110(3)： p.532-538
Appears in Collections:	[Dept. of Pharmacy] Periodical Articles

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