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KMID : 0545120090190050455
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Journal of Microbiology and Biotechnology
2009 Volume.19 No. 5 p.455 ~ p.461
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Structural Characteristics of Immunostimulating Polysaccharides from Lentinus edodes
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Lee Hee-Hwan
Lee Jong-Seok
Cho Jae-Youl
Kim Young-Eon
Hong Eock-Kee
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Abstract
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There is a significant amount of experimental evidence suggesting that polysaccharides from mushrooms enhance the host immune system by activating various mechanisms in immune cells, including macrophages. In this study, polysaccharides from Lentinus edodes were found to stimulate the functional activation of macrophages to secrete inflammatory mediators and cytokines and increase the phagocytotic uptake. The chemical properties of the stimulatory polysaccharides, CPFN-G-I, CPBN-G, and CPBA-G, were determined based on their monosaccharide composition, which mainly consisted of glucose and mannose. According to FT-IR and GC/MS, the structure of CPFN-G-I, purified from the fruiting body of L. edodes, was found to consist of a β-1,6-branched-β-1,4-glucan, whereas CPBN-G and CPBA-G, purified from the liquid culture broth, were found to be composed of a heteromannan. The configuration of the β-linkage and triple helical conformation of each polysaccharide were confirmed using a Fungi-Fluor kit and Congo red, respectively.
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KEYWORD
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Lentinus edodes, immunostimulating polysaccharide, mushroom-derived β-glucan, triple helical conformation, Congo red, structural analysis
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