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半枝莲多糖对胃癌细胞SGC—7901的细胞活性影响

2017-06-29高山宋高臣许晓义

中外医学研究 2017年15期
关键词:胃癌

高山+宋高臣+许晓义

【摘要】 目的:研究半枝莲多糖(scutellaria barbata polysaccharides,SBP)对胃癌细胞SGC-7901细胞活性的影响。方法:利用不同质量浓度半枝莲多糖处理SGC-7901胃癌细胞,对SBP处理后的SGC-7901进行细胞计数,利用MTT法检测半枝莲多糖对胃癌细胞SGC-7901的细胞活性的影响;采用荧光定量RT-PCR对SGC-7901细胞中的野生型P53基因的表达进行检测。结果:经SBP处理后胃癌细胞SGC-7901的细胞数明显减少,SBP对SGC-7901的细胞活性的抑制呈剂量依赖性,其中20 μg/ml SBP组的活性抑制率最高,野生型P53基因表达量随SBP质量浓度升高而增加,10、20 μg/ml SBP组P53基因的表达量高于阴性对照组,差异有统计学意义(P<0.01)。结论:半枝莲多糖通过上调抑癌基因P53以抑制胃癌细胞SGC-7901的生长活性。

【关键词】 半枝莲多糖; 胃癌; 增殖抑制; 基因表达调控; 细胞培养

doi:10.14033/j.cnki.cfmr.2017.15.001 文献标识码 A 文章编号 1674-6805(2017)15-0001-02

Influence of Scutellaria Barbata Polysaccharide on the Cell Activity of Gastric Carcinoma Cell SGC-7901/GAO Shan,SONG Gao-chen,XU Xiao-yi.//Chinese and Foreign Medical Research,2017,15(15):1-2

【Abstract】 Obejective:To study the effect of SBP(scutellaria barbata polysaccharides) on SGC-7901 gastric cancer cellular activity.Method:SGC-7901 gastric carcinoma cell was handled with SBP in different mass concentration,the cellular activity that SGC-7901 under the treatment of SBP was observed by MTT,the expression of wt-P53 gene was detected in SGC-7901 including which cultured by SBP.Result:The count of SGC-7901 which had been handled by SBP reduced significantly, the depression of cellular activity had dose-dependent,the most obvious depressive activity was in the 20 μg/ml SBP group,the level of wt-P53 expression in SBP cultured SGC-7901 cell group elevated with the increase of mass concentration of SBP.The level of P53 expression in the 10 and 20 μg/ml

SBP group were higher than the negative control,the differences were statistically significant(P<0.01).Conclusion:SBP depresses the growth of SGC-7901 gastric tumor cell by upregulating P53 gene.

【Key words】 Scutellaria barbata polysaccharides; Gastric cancer; Depression of proliferation; Regulation of genome expression; Cell culture

First-authors address:Mudanjiang Medical University,Mudanjiang 157011,China

半枝蓮(Scutellaria barbata),作为一种民间常用中草药,其性寒,味辛、苦,具有清热解毒、散癖止血、利尿消肿等功效,常用于治疗咽喉肿痛、跌打伤痛、疗疮肿毒、水肿、黄疽、蛇虫咬伤等[1]。现代研究及临床数据证明,半枝莲具有良好的抗肿瘤活性,疗效确切,主治原发性肝癌等消化道肿瘤、肺癌及宫颈癌等妇科肿瘤[2]。半枝莲多糖(Scutellaria barbata polysaccharides,SBP)是半枝莲中的重要多糖成分,前期研究发现其具有对化疗药物环磷酰胺的增效减毒作用以及对肝癌SMMC-7721明显的生长抑制作用。本研究通过对半枝莲多糖对胃癌细胞SGC-7901细胞生长活性及其对野生型P53抑癌基因影响的研究,以探索半枝莲多糖对胃癌细胞的生长抑制作用。

1 材料与方法

1.1 实验材料

SGC-7901胃癌细胞株(中国科学院上海细胞所细胞库),RPMI 1640培养基(Hyclone);FBS胎牛血清(solar bio);胰酶(solar bio);噻唑蓝(MTT,Sigma);DMSO(Sigma);96孔细胞培养板;半枝莲粗多糖(黑龙江中医药大学生化教研室制备);……

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