Inflammation Modulatory Phorbol Esters from the Seeds of Aquilaria malaccensis

Vitthal D. Wagh, Michal Korinek, I. Wen Lo, Yu Ming Hsu, Shu Li Chen, Hsue Yin Hsu, Tsong Long Hwang, Yang Chang Wu, Bing Hung Chen, Yuan Bin Cheng*, Fang Rong Chang

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

18 Scopus citations

Abstract

The tree Aquilaria malaccensis is a valuable source of agarwood, which is used in herbal medicinal preparations. Phytochemical research on A. malaccensis seeds has led to the isolation of four new phorbol esters (1-4), two known phorbol esters (5, isolated from Nature for the first time, and 6), and two known glycerides (7 and 8). The structures of these isolates were elucidated by means of spectroscopic data interpretation. The inflammation-modulatory activities of the isolates on elastase release and superoxide anion generation in human neutrophils were evaluated. Interestingly, phorbol esters 1, 5, and 6 showed potent inhibitory activity on elastase release in human neutrophils, with IC50 values of 2.7, 0.8, and 2.1 μM, respectively. All isolated phorbol esters exerted enhancing activity on superoxide anion generation. The results indicated that phorbol esters may play a bilateral modulatory role in the processes of inflammation. In addition, the compounds were evaluated for their cytotoxic properties against HepG2 (hepatoma), MDA-MB-231 (breast), and A549 (lung) cancer cells, but all compounds were inactive for all cell lines used (IC50 > 10 μM).

Original languageEnglish
Pages (from-to)1421-1427
Number of pages7
JournalJournal of Natural Products
Volume80
Issue number5
DOIs
StatePublished - 26 05 2017

Bibliographical note

Publisher Copyright:
© 2017 The American Chemical Society and American Society of Pharmacognosy.

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