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International Journal of Medicinal Mushrooms
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ISSN Imprimer: 1521-9437
ISSN En ligne: 1940-4344

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International Journal of Medicinal Mushrooms

DOI: 10.1615/IntJMedMushrooms.v17.i9.90
pages 891-901

Antitumor and Immunomodulating Activities of Exopolysaccharide Produced by Big Cup Culinary- Medicinal Mushroom Clitocybe maxima (Higher Basidiomycetes) in Liquid Submerged Culture

Shu-Hui Hu
Department of Nutrition and Dietetics, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan; Department of Medical Laboratory Science and Biotechnology, Kaohsiung Medical University, Kaohsiung, Taiwan
Peter Chi Keung Cheung
School of Life Sciences, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
Raw-Pou Hung
Department of Dietetics, Zhongxiao Branch, Taipei City Hospital, Nangang District, Taipei, Taiwan
Yu-Kuei Chen
Department of Food Science and Nutrition, MeiHo University, Neipu Shiang, Pingtung, Taiwan
Jinn-Chyi Wang
Department of Food Science and Technology, Tajen University, Shin-Erh Village, Yen-Pu Shiang, Pingtung, Taiwan
Sue-Joan Chang
Department of Life Science, National Cheng Kung University, Tainan, Taiwan, 701


Water-soluble polysaccharides extracted from mushrooms have been found to have some physiological effects. In this study, exopolysaccharides (EPSs) were extracted by alcohol precipitation from cultivated broth of the mushroom Clitocybe maxima. EPSs with molecular weights of 104 and 105 Da were obtained by ultrafiltration; they are referred to as EPA and EPB, respectively. The major components of these EPSs were glucose, galactose, mannose, rhamnose, and arabinose. ICR mice with artificially induced metastatic pulmonary tumors were fed a daily diet containing EPA or EPB at doses of 8, 20, or 50 mg/kg. Results showed that the proliferation of pulmonary sarcoma lesions was lower in the groups fed EPS. In addition, the numbers of total T cells, CD4+ cells, CD8+ cells, and macrophages significantly increased in EPS-fed mice compared with the negative control group. The antitumor and immunomodulating effects observed in the EPB-fed groups were higher than those of EPA-fed groups. These results demonstrate the ability of EPSs of C. maxima to inhibit tumor cells while enhancing immune response.

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