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ECB-ART-40049
Biosci Biotechnol Biochem 2006 Dec 01;7012:2906-12. doi: 10.1271/bbb.60318.
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Isolation of sphingoid bases of sea cucumber cerebrosides and their cytotoxicity against human colon cancer cells.

Sugawara T , Zaima N , Yamamoto A , Sakai S , Noguchi R , Hirata T .


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Sea cucumber is a health-beneficial food, and contains a variety of physiologically active substances including glycosphingolipids. We show here the sphingoid base composition of cerebrosides prepared from sea cucumber and the cytotoxicity against human colon cancer cell lines. The composition of sphingoid bases prepared from sea cucumber was different from that of mammals, and the major constituents estimated from mass spectra had a branched C17-19 alkyl chain with 1-3 double bonds. The viability of DLD-1, WiDr and Caco-2 cells treated with sea cucumber sphingoid bases was reduced in a dose-dependent manner and was similar to that of cells treated with sphingosine. The sphingoid bases induced such a morphological change as condensed chromatin fragments and increased the caspase-3 activity, indicating that the sphingoid bases reduced the cell viability by causing apoptosis in these cells. Sphingolipids of sea cucumber might therefore serve as bioactive dietary components to suppress colon cancer.

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Genes referenced: dld LOC100887844 LOC100893907 LOC115919910 LOC593824