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Isoeleutherin and eleutherinol, naturally occurring selective modulators of Th cell-mediated immune responses

Title
Isoeleutherin and eleutherinol, naturally occurring selective modulators of Th cell-mediated immune responses
Authors
Hong J.-H.Yu E.S.Han A.-R.Nam J.-W.Seo E.-K.Hwang E.S.
Ewha Authors
서은경황은숙한아름
SCOPUS Author ID
서은경scopus; 황은숙scopus; 한아름scopusscopus
Issue Date
2008
Journal Title
Biochemical and Biophysical Research Communications
ISSN
0006-291XJCR Link
Citation
vol. 371, no. 2, pp. 278 - 282
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
Natural compounds possessing naphthopyran moiety have been attracted by their anti-bacterial, anti-fungal, and anti-viral activities, as well as anti-tumor activities. Although chemical structures were critical for the potential biological activities, the detailed functional mechanisms remained unclear. Here, we have studied the effects of naphthopyran derivatives (eleutherin, isoeleutherin, and eleutherinol) on T helper cell-mediated immune responses to understand the mechanisms of their anti-microbial and anti-tumor activities. The study revealed that isoeleutherin, which has 1,4-naphthoquinone ring with α-methyl group, selectively and specifically stimulated IFNγ production through the activation of T-bet gene transcription, thus enhancing Th1-mediated immune responses. However, a natural naphthopyran-4-one, eleutherinol dramatically inhibited both IFNγ and IL-2 productions during Th cell activation by suppressing the gene transcriptions of cytokines. Therefore, we suggest that the chemical modification and chirality of naphthopyran moiety in isoeleutherin and eleutherinol may be critical for the selective modulation of T helper cell-mediated immune responses. © 2008 Elsevier Inc. All rights reserved.
DOI
10.1016/j.bbrc.2008.04.060
Appears in Collections:
약학대학 > 약학과 > Journal papers
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