• 1. The Affiliated Hospital of Hainan Medical College, Haikou 570102 , China;;
  • 2. Department of General Surgery , The First Affiliated Hospital , Chongqing Medical Universi t y , Chongqing 400016 , China;;
  • 3. Department of Pathophysiology , Preclinical Medical School , Chongqing Medical Universi t y , Chongqing 400016 , China;;
  • 4. Department of General Surgery , The People’s Hospital of Guangan , Sichuan Province , Guangan 638000 , China;
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Objective  To study the effect of genistein (Gen) in combination with 5-fluorouracil (5-FU) on human gastric carcinoma cells in vitro. Methods  Human gastric carcinoma cell line SGC-7901 was t reated with Gen and 5-FU alone or in combination for 24 , 48 and 72 hours , respectively. MTT assay was used to investigate the inhibitory effect of Gen and
5-FU on SGC-7901 cells. Transmission electron microscopy was used to observe the ultramicrost ructure changes of cancer cells and the flow cytometry was used to detect the distribution of cell cycle. Results  Gen and 5-FU alone or in combination inhibited the proliferation of SGC-7901 cells significantly in both time-dependent and dose-dependent manner. The combination of Gen with 5-FU had synergistic effect on the growth of SGC-7901 cell line when the inhibition ratio was 20 % to 80 %. When SGC-7901 cells exposed to 18. 8μmol/ L Gen , 8. 84μmol/ L 52FU , and 3. 06μmol/ L Gen combined with 7. 96μmol/ L 5-FU for 72 hours , 62. 97 % , 63. 76 % and 67. 46 % SGC-7901 cells were arrested in G2 / M , S and G0 / G1 phrase , respectively. Gen and 5-FU could both induce apoptosis and arrest cell cycle of SGC-7901 cells. Conclusion  Combination therapy of Gen with 5-FU may take synergistic inhibitory effect on the proliferation of gastric cancer cells by resting cell cycle and inducing cell apoptosis at a certain range of concent ration.

Citation: WANG Zhengwen ,ZHU Mingcai,TANG Weixue,GONG Jun,FAN Weike,WEI Jinlai,CUI Haining. Effect of Genistein Combined with 5-FU on Human Gastric Cancer Cell Line SGC-7901 in Vit ro. CHINESE JOURNAL OF BASES AND CLINICS IN GENERAL SURGERY, 2008, 15(1): 17-22. doi: Copy