矢车菊素-3-葡萄糖苷对胃癌细胞侵袭转移的影响

目的 观察矢车菊素-3-葡萄糖苷(C3G)对人胃癌细胞株MGC803和SGC7901增殖、迁移和侵袭运动能力的影响,并初步探讨其可能的机制.方法 用C3G处理人胃癌MGC803和SGC7901细胞株,用MTF比色法检测C3G对该细胞系增殖的抑制作用,Transwe1l小室进行迁移实验和人工重组基底膜侵袭实验.用RT-PCR及Western blot方法检测用药前后肿瘤细胞中基质金属蛋白酶2(MMP-2)基因和蛋白的表达水平.结果 C3G在体外明显抑制人胃癌MGC803和SGC7901细胞的增殖,且呈浓度、时间依赖性(P＜0.01),MGC803 24 hIC50=6.27μg/ml,SCC7901 24 h IC50=5.42 μg/ml.经C3G处理后,MGC803和SGC7901细胞迁移、侵袭能力明显降低(P＜0.01),MGC803和SGC7901阴性对照组24 h侵袭细胞数分别为(207±9)个和(115±9)个,C3G 10 μg/ml组侵袭细胞数则分别减少至(24±5)个和(14±6)个.MMP-2基因和蛋白表达水平显著下降(P＜0.01),且呈现浓度依赖性.结论 C3G具有体外抗胃癌细胞增殖的作用,且可能通过抑制肿瘤细胞的迁移和侵袭运动能力来发挥预防肿瘤侵袭的作用,其机制可能与抑制MMP-2的生成有关.

Abstract：

Objective To investigate the effect of cyanidin-3-glucoside extracted from Chinese bayberry on the proliferation. migration and invasion ability of the gastric cancer cell lines MGC803 and SGC7901 in vitro, and explore the possible mechanism of the preventive effects of C3G on tumor metastasis.Methods After treatment by C3G, the growth inhibiting of C3G on MGC803 and SGC7901 was determined by MTF assay, cell migration and invasion ability was evaluated with transwell chamber. Expression of Matrix metalloproteinase 2( MMP-2 )mRNA and protion on cells were analyzed by RT-PCR and Western blot.Results C3G significantly inhibited the proliferation of MGC803 and SGC7901 cells in a concentration and time-dependent manner as measured by MTT method ( P ＜0. 01 ), and the IC50 were: MGC803:24 h IC50 =6. 27 μg/ml;SGC7901:24 h IC50 = 5.42 μg/ml. After the cells were treated with C3G, the migration and invasion ability of MGC803 and SGC7901 cells decreased significantly ( P ＜ 0. 01 ) the number of invasive cells in 24 hours of the negative control MGC803, SGC7901 group was ( 207 ± 9 ) and ( 115 ± 9 ),respectively, while in C3G 10 μg/ml group the number of invasive cells decreased to( 24 ± 5 ) , ( 14 ± 6). In addition, the expression of MMP-2 mRNA and protion decreased abviously ( P ＜ 0. 01 ), all that was in a concentration-dependent manner. Conclusions In vitro, C3G has a concentration- and time-dependent growth inhibiting effect on MGC803 and SGC7901 cells, and may prevent metastasis by affecting migration and invasion ability of tumor cells. This action may be mediated by down-regulation of MMP-2mRNA and protein.

The effect of cyanidin-3-glucoside on the invasive ability of gastric cancer cell lines

Objective To investigate the effect of cyanidin-3-glucoside extracted from Chinese bayberry on the proliferation. migration and invasion ability of the gastric cancer cell lines MGC803 and SGC7901 in vitro, and explore the possible mechanism of the preventive effects of C3G on tumor metastasis.Methods After treatment by C3G, the growth inhibiting of C3G on MGC803 and SGC7901 was determined by MTF assay, cell migration and invasion ability was evaluated with transwell chamber. Expression of Matrix metalloproteinase 2( MMP-2 )mRNA and protion on cells were analyzed by RT-PCR and Western blot.Results C3G significantly inhibited the proliferation of MGC803 and SGC7901 cells in a concentration and time-dependent manner as measured by MTT method ( P ＜0. 01 ), and the IC50 were: MGC803:24 h IC50 =6. 27 μg/ml;SGC7901:24 h IC50 = 5.42 μg/ml. After the cells were treated with C3G, the migration and invasion ability of MGC803 and SGC7901 cells decreased significantly ( P ＜ 0. 01 ) the number of invasive cells in 24 hours of the negative control MGC803, SGC7901 group was ( 207 ± 9 ) and ( 115 ± 9 ),respectively, while in C3G 10 μg/ml group the number of invasive cells decreased to( 24 ± 5 ) , ( 14 ± 6). In addition, the expression of MMP-2 mRNA and protion decreased abviously ( P ＜ 0. 01 ), all that was in a concentration-dependent manner. Conclusions In vitro, C3G has a concentration- and time-dependent growth inhibiting effect on MGC803 and SGC7901 cells, and may prevent metastasis by affecting migration and invasion ability of tumor cells. This action may be mediated by down-regulation of MMP-2mRNA and protein.