Identification of zerumbone in Zingiber zerumbet Smith as a potent inhibitor of 12-O-tetradecanoylphorbol-13-acetate-induced Epstein-Barr virus activation |
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| Authors: | Murakami A Takahashi M Jiwajinda S Koshimizu K Ohigashi H |
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| Affiliation: | Department of Biotechnological Science, Faculty of Biology-Oriented Science and Technology, Kinki University, Wakayama, Japan. |
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| Abstract: | Zerumbone was isolated from the rhizomes of Zingiber zerumbet Smith as a potent inhibitor of tumor promoter 12-O-tetradecanoylphorbol-13-acetate-induced Epstein-Barr virus activation. The IC50 value of zerumbone (0.14 microM) is noticeably lower than those of the anti-tumor promoters we have hitherto obtained. Interestingly, alpha-humulene lacking the carbonyl group at the 8-position in zerumbone was inactive (IC50 > 100 microM), while 8-hydroxy-alpha-humulune was markedly active (IC50 = 0.95 microM). |
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