Journal of Clinical Biochemistry and Nutrition
Online ISSN : 1880-5086
Print ISSN : 0912-0009
Original Articles
A marine bio-functional lipid, fucoxanthinol, attenuates human colorectal cancer stem-like cell tumorigenicity and sphere formation
Masaru TerasakiHayato MaedaKazuo MiyashitaTakuji TanakaShingo MiyamotoMichihiro Mutoh
Author information
JOURNALS OPEN ACCESS

2017 Volume 61 Issue 1 Pages 25-32

Details
Abstract

Fucoxanthinol (FuOH), an intestinal metabolite form of fucoxanthin (Fx) isolated from marine algae, is known to possess multiple health benefits, such as prevention of human cancer. However, there is little available information about the effects of FuOH on colorectal cancer stem cells (CCSCs) and their contribution to drug resistance, tumorigenesis and cancer recurrence. In the present study, we investigated the anti-proliferative effect of FuOH on two putative CCSCs, CD44high/EpCAMhigh cells and colonospheres (Csps) formed by HT-29 human colorectal cancer cells, and the suppressive effects of FuOH on the growth of xenografted tumor. FuOH significantly inhibited the growth of CD44high/EpCAMhigh cells and disintegrated Csps and induced many condensed chromatin bodies in the cells in a dose-dependent manner. The IC50 value of FuOH for these changes in Csps was 1.8 µM. FuOH down-regulated pAkt (Ser473), PPARβ/δ and PPARγ in Csps. These proteins play a critical role in cell proliferation, the cell cycle, metastasis and extracellular adhesion. Ten days after the administration of FuOH (5 mg/kg body weight) to the mice every 3 to 4 days significantly suppressed the Csps tumorigenesis when compared to the untreated control mice. Our results suggest that FuOH could be used as a chemopreventive agent against human CCSC.

Information related to the author
© 2017 JCBN
Previous article Next article
feedback
Top