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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.2017024975
pages 1053-1060

A Polysaccharide Isolated from Mycelia of the Lion’s Mane Medicinal Mushroom Hericium erinaceus (Agaricomycetes) Induced Apoptosis in Precancerous Human Gastric Cells

Mingxing Wang
Affiliated Hospital, Changchun University of Chinese Medicine, Changchun, China
Yanqiu Zhang
Affiliated Hospital, Changchun University of Chinese Medicine, Changchun, China
Xulang Xiao
International Collaborative Research Center, Changchun University of Chinese Medicine, Changchun, China
Duoduo Xu
International Collaborative Research Center, Changchun University of Chinese Medicine, Changchun, China
Yang Gao
International Collaborative Research Center, Changchun University of Chinese Medicine, Changchun, China
Qipin Gao
International Collaborative Research Center, Changchun University of Chinese Medicine, Changchun, China

RÉSUMÉ

Hericium erinaceus is typically used in traditional Chinese medicine for mucosal protection, healing of gastric ulcers, and treatment of gastritis. We purified from the cultured mycelia of H. erinaceus a polysaccharide with anti–gastric ulcer and antigastritis activity, but its effects on gastric malignancy have not been elucidated. We examined the differential effects of this purified polysaccharide, named EP-1, on the human gastric (GES-1) cell line and a precancerous cell line (MC) that was transformed from GES-1 using N-methyl-N'-nitro-N-nitrosoguanidine. We observed that the polysaccharide potently induced cell apoptosis and cell cycle arrest at the G0/G1 phase in the MC cell line but did not have any effect on the GES-1 cell line at the same doses. Further mechanistic studies revealed that the polysaccharide exerted its activity through an apoptosis-associated pathway by modulating the expression of Bax, Bcl-2, and caspase-3. Differential effects of the polysaccharide on the GES-1 and MC cell lines indicate that the polysaccharide was effective in preventing gastric cancer progression.


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