Papuamine and haliclonadiamine, obtained from an Indonesian sponge Haliclona sp., inhibited cell proliferation of human cancer cell lines
2013
Yamazaki, Hiroyuki | Wewengkang, Defny S. | Kanno, Syu-ichi | Ishikawa, Masaaki | Rotinsulu, Henki | Mangindaan, Remy E.P. | Namikoshi, Michio
The extract of an Indonesian marine sponge Haliclona sp. showed potent cytotoxicity against human solid cancer cell lines, MCF-7 (breast), LNCap (prostate), Caco-2 (colon) and HCT-15 (colon) cells. Study on nuclear morphological changes and flow cytometric analysis suggested that the component(s) in the extract would induce an apoptosis to these cancer cells. Bioassay-guided isolation yielded two pentacyclic alkaloids, papuamine (1) and haliclonadiamine (2), which inhibited cell proliferation of six human cancer cell lines with IC₅₀ values of 0.93–1.50 and 1.00–4.44 µM, respectively. Compounds 1 and 2 accumulated lymphoma U937 cells at sub-G₁ phase and induced a condensation of chromatin and fragmentation of nucleus.
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