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Issue title: The Proceedings of the 3rd International Conference on Food Factors (ICoFF 03)
Article type: Research Article
Authors: Murakami, Akira | Miyamoto, Masaaki | Ohigashi, Hajime
Affiliations: Division of Food Science and Biotechnology, Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan. Fax: +81 75 753 6284; E-mail: cancer@kais.kyoto-u.ac.jp
Note: [] Corresponding author
Abstract: Zerumbone, a sesquiterpene occurring in zingiberaceous plants in Southeast Asian countries, has been shown to have anti-inflammatory effects in several independent experimental studies. We examined its effect on the expression of proinflammatory genes in human colon adenocarcinoma cell lines, Caco-2, Colo320DM, and HT-29, using reverse transcription-polymerase chain reaction (RT-PCR) assays. Surprisingly, zerumbone markedly induced the expression of interleukin (IL)-1α, IL-1β, IL-6, and tumor necrosis factor (TNF)-α in each cell line in concentration- and time-dependent manners. Results of a previous pharmacological approach using specific inhibitors of mitogen-activated protein kinases (MAPKs) suggested that the activation of both c-Jun N-terminal kinase and extracellular signal-regulated protein kinase, however, not that of p38 MAPK, may be involved in zerumbone-induced IL-1β expression pathways in Caco-2 cells. The present results imply that zerumbone increases the production of proinflammatory cytokines in cancerous tissues in the colon and that this biochemical property may cause side-effects.
Journal: BioFactors, vol. 21, no. 1-4, pp. 95-101, 2004
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