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A Novel Polysaccharide from Lentinus edodes Mycelia Exhibits Potential Antitumor Activity on Laryngeal Squamous Cancer Cell Line Hep-2 |
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| Authors: | Xiangyu Cao Ruihua Liu Jianli Liu Yapeng Huo Wei Yang Meng Zeng Chao Yang |
| Institution: | 1. School of Life Science, Liaoning University, Shenyang, 110036, China 2. State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin, 300071, China 3. Tianjin Academy of Environmental Sciences, Tianjin, 300191, China 4. Key Laboratory of Molecular Microbiology and Technology for Ministry of Education, College of Life Sciences, Nankai University, Tianjin, 300071, China |
| Abstract: | A novel polysaccharide Lentinus edodes mycelia polysaccharide 2 (LMP2)] with a molecular weight of 2.27?×?104 Da was isolated from the Lentinus edodes mycelia and purified by Sephadex G-200 and diethylaminoethyl-32 column chromatography. HPLC results indicated that LMP2 contained mannose, arabinose, galactose, xylose, and rhamnose with a relative molar ratio of 1:0.74:3.23:1.18:10.98. Its antitumor activity was evaluated in vitro by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay, colony formation assay, and transwell assay. LMP2 showed a remarkable inhibitory effect on the proliferation of Hep-2 cells, and at the concentration of 200 mg/ml, the inhibition ratio was 37.2 % after 72 h. Furthermore, colony formation of Hep-2 cells was reduced significantly after treatment with LMP2. Invasion of Hep-2 cells was inhibited significantly by LMP2. These results suggested that LMP2 could be explored as a potential antitumor material for laryngeal carcinoma. |
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