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KMID : 0545120010110061071
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Journal of Microbiology and Biotechnology
2001 Volume.11 No. 6 p.1071 ~ p.1076
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In Vitro Cancer Chemopreventive Activities of Polysaccharides from Soybeans Fermented with Phellinus igniarius or Agrocybe cylindracea
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Shon Yun-Hee
Nam Kyung-Soo
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Abstract
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Chemopreventive activities of polysaccharides from soybeans fermented with either Phellinus igniarius or Agrocybe cylindracea were investigated by measuring the induction of quinone reductase (QR), glutathione S-transferase (GST) activities, and glutathione (GSH) levels in the cell culture along with inhibition of polyamine biosynthesis. The polysaccharides from soybeans fermented with P. igniarius strongly (p<0.005) induced QR activity at all concentrations tested. The extract not only induced GST activity in a dose-dependent manner in the concentration range of 0.1-1.0 ㎎, but significantly induced GSH levels in cultured Hepa 1c1c7 cells with a maximal 1.4-fold increase at 0.1 ㎎. The polysaccharides from soybeans fermented with A. cylindracea were effective in inhibiting polyamine metabolism. These results suggest that polysaccharides from soybeans fermented with P. igniarius or A. cylindracea have cancer chemopreventive activities in in vitro models and, therefore, could be considered as potential agents for cancer chemoprevention.
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