Journal
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
Volume 157, Issue -, Pages 311-318Publisher
ELSEVIER
DOI: 10.1016/j.ijbiomac.2020.04.014
Keywords
Poria cocos polysaccharides; Cancer cell migration; Slug
Funding
- Ministry of Science and Technology, Taiwan [MOST 108-2320-B-077-005-MY3, MOHW108-NRICM-B-325-000202, MOST 108-2636-B-010-003, MOST 106-2320-B-002-012-MY3]
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Poria cocos (Polyporacea), is a fungus used in traditional Chinese medicine. A study of the valuable sulfated polysaccharides (SPS) with the structure and pharmaceutical benefits from the mycelial culture conditions of P. cocos was attempted. The SPSs were fractionated by gel filtration chromatography to give a fucose-containing mannoglucan polysaccharide (denoted as FMGP): [GRAPHICS] The main skeleton was a 1,4-alpha-Man-interlaced-1,3-beta-glucan with interlaced 6-O-alpha-t-fucosyl 1,4-alpha-Glc and 1,4-alpha-Cal branches. FMGP dramatically inhibited cell migration in the highly metastatic human lung cancer cell line CL1-5 cells. Mechanistically, FMGP dramatically downregulated the expression of TCF beta RI and inhibited phosphorylation of FAK and AKT. Moreover, FMGP reduced the metastasis-related protein, Slug, expression. This is the first paper reporting a branched 1,3-beta-mannoglucan from P. cocos and its anti-lung cancer CL1-5 cells migration activities. (C) 2020 Published by Elsevier B.V.
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