• 1. 3rd General Surgery, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China;
  • 2. College of Chemical Engineering, Qingdao University of Science & Technology, Qingdao 266000, Shandong Province, China;
CHAIChen, Email: chasechai@126.com
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Objective To investigate the mechanism of lignans-1inhibiting the proliferation of human gastric cancer cell line SGC-7901. Methods The morphological changes of the cells were observed by the inverted phase contrast microscope. The cell surviving ratio was determined by methylthiazoly tetrazolium (MTT) assay after lignans-1 added to the cells at different concentrations on human gastric cancer SGC-7901 cell line in vitro, and half maximal (50%) inhibitory concentration (IC50) values were calculated. The cell cycle phase distribution and apoptosis were measured by flow cytometry. The expressions of apoptosis associated proteins of Caspase3, Bcl-2 and Bax were determined by Western blot. Results Morphological examination showed that lignans-1 could destroy the SGC-7901 cells with the increasing concentration of lignans-1. The inhibitory effect of lignans-1 on SGC-7901 cell was associated with time-and dose-dependent manner at the different concentration (2.5-20 μg/mL), P < 0.05. The IC50 of lignans-1 on the SGC-7901 cells was 4.19 μg/mL. The rate of the apoptosis cells and G2/M phase cells raised significantly after 48 hours' treatment with lignans-1, as same as the expression of Caspase3 and Bax (P < 0.05). G0/G1 phase cells and Bcl-2 decreased significantly with the increasing concentration of lignans-1 (P < 0.05). Conclusions The lignans-1 could inhibit the proliferation of SGC-7901 cells and induce apoptosis by arresting cells at G2/M phase in vitro. The mechanism is associated with activation of Caspase3 and Bax and inhibition of Bcl-2.

Citation: QI Ying-wen, PENG Chao, XIA Ya-mu, XU Kun, WANG Zhi-wei, CHAI Chen. Anti-Tumor Effects of Lignans-1 on Human Gastric Cancer SGC-7901 Cells in Vitro. CHINESE JOURNAL OF BASES AND CLINICS IN GENERAL SURGERY, 2016, 23(10): 1204-1208. doi: 10.7507/1007-9424.20160309 Copy

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