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Terpenoid tetrahydroisoquinoline alkaloids emetine, klugine, and isocephaeline inhibit the activation of hypoxia-inducible factor-1 in breast tumor cells.

ABSTRACT: Klugine (1), isocephaeline (2), and emetine (4) inhibited hypoxia-inducible factor-1 (HIF-1) activation by hypoxia in T47D breast tumor cells (IC(50) values 0.2, 1.1, and 0.11 muM, respectively). Compounds 1, 2, and 4 inhibited both hypoxia- and iron chelator-induced HIF-1 activation by blocking HIF-1alpha protein accumulation.

SUBMITTER: Zhou YD 

PROVIDER: S-EPMC2907142 | biostudies-literature | 2005 Jun

REPOSITORIES: biostudies-literature

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Terpenoid tetrahydroisoquinoline alkaloids emetine, klugine, and isocephaeline inhibit the activation of hypoxia-inducible factor-1 in breast tumor cells.

Zhou Yu-Dong YD   Kim Yong-Pil YP   Mohammed Kaleem Asjad KA   Jones Deborah K DK   Muhammad Ilias I   Dunbar D Chuck DC   Nagle Dale G DG  

Journal of natural products 20050601 6

Klugine (1), isocephaeline (2), and emetine (4) inhibited hypoxia-inducible factor-1 (HIF-1) activation by hypoxia in T47D breast tumor cells (IC(50) values 0.2, 1.1, and 0.11 muM, respectively). Compounds 1, 2, and 4 inhibited both hypoxia- and iron chelator-induced HIF-1 activation by blocking HIF-1alpha protein accumulation. ...[more]

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