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http://dx.doi.org/10.3746/jkfn.2005.34.10.1514

Anti-proliferating Effects of Porphyra tenera Fractions on Several Cancer Cell Lines in uitro  

Shin, Mi-Ok (Dept. of Food and Nutrition, Marine Biotechnology Center for Biofunctional Material Industries, Silla University)
Bae, Song-Ja (Dept. of Food and Nutrition, Marine Biotechnology Center for Biofunctional Material Industries, Silla University)
Publication Information
Journal of the Korean Society of Food Science and Nutrition / v.34, no.10, 2005 , pp. 1514-1519 More about this Journal
Abstract
This study was performed to investigate the effects of Porphyra tenera (PT) on cytotoxicity and quinone reductase (QR) activity in the cancer cells. PT was extracted with methanol and further fractionated into five different types: hexane (PTMH), ethyl-ether (PTMEE), ethylacetate (PTMEA) butanol (PTMB) and aquous (PTMA) partition layers. We determined the cytotoxic effect of these layers on C6, HepG2, MCF-7, and HT-29 cell lines by MTT assay. Among the various fractions, hexane (PTMH) of PT showed the strongest cytotoxic effect on C6, HepG2 and MCF-7 cell lines. PTMH displayed very low level of cytotoxicity at the lower concentration levels and at 300 $\mu$g/mL. PTMH resulted in 87.5$\%$ growth inhibition on C6 cell 70 $\%$ on the HepG2 cell and 89$\%$ on the MCF-7 cell, which were significantly high compared to other fractions. A 400 $\mu$g/mL PTMH concentration level, 99$\%$, 94.5$\%$ and 99$\%$ of cell growth inhibition were resulted on the same cell lines. On HT-29 cell line, both hexane (PTMH) and aqueous (PTMA) fraction of PT showed cytotoxic effects, but the Percentage was not as high as previous results tested on other cell lines such as C6 HepG2 and MCF-7 cell lines. Also, we observed quinone reductase (QR) inducing-effects in all fractions of PT on HepG2 cells. The QR inducing effects of the PTMH on HepG2 cells at 150 $\mu$g/mL concentration was 6.6 times higher than the control. Although further studies are needed, the present work suggests that PT was a potential to be used as a chemopreventive.
Keywords
cytotoxicity; quinone reductase (QR); Porphyra tenera (PT);
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