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作 者:刘西茜[1] 董小倩[1] 张永红[1] 张平[1] 李小玉[1] 陈思秀[1] 冯云[1]
机构地区:[1]口腔疾病研究国家重点实验室华西口腔医院(四川大学),成都610041
出 处:《华西口腔医学杂志》2014年第1期5-8,共4页West China Journal of Stomatology
基 金:国家自然科学基金资助项目(30972764)
摘 要:目的研究高迁移率族蛋白N2(HMGN2)对人舌癌裸鼠移植瘤生长的抑瘤作用。方法裸鼠腋下注射接种舌鳞癌细胞Tca8113以建立裸鼠移植瘤模型,接种7 d成瘤后,设立阴性对照组、HMGN2蛋白组和阳性对照组,在瘤体周边分别注射含washingbufferⅡ、HMGN2蛋白和顺铂的细胞培养基。观察各组裸鼠肿瘤的生长情况,经过4次给药后处死裸鼠,取出瘤块,称其质量计算抑瘤率,并行苏木精-伊红(HE)染色观察形态学变化。结果成功建立舌癌裸鼠移植瘤模型。HMGN2蛋白组和阳性对照组肿瘤体积明显小于阴性对照组。裸鼠体重在整个实验过程中并没有明显的变化。阴性对照组、HMGN2蛋白组、阳性对照组的肿瘤质量平均值分别为(0.38±0.19)、(0.21±0.15)、(0.23±0.16)g,3组间的差异无统计学意义。HMGN2蛋白组和阳性对照组的抑瘤率分别为45.71%和39.44%。肿瘤经肉眼观察可见阴性对照组瘤块较大,HE染色可见HMGN2蛋白组和阳性对照组细胞坏死明显。结论 HMGN2蛋白可以明显抑制人舌癌裸鼠移植瘤的生长。Objective To evaluate the inhibitory effect of high mobility group chromosomal protein N2 (HMGN2) on human tongue carcinoma tumor in nude mice. Methods A transplantation tumor model in nude mice was constructed by injecting Tca8113 cells. After a week, negative control groups, masculine control groups, and HMGN2 groups were esta- blished. Cell culture of the three groups were separately injected with washing buffer ]I, cis-dichlorodiamineplatinum (DDP), and HMGN2 protein. The tumors were moved after four treatments, and then analyzed by hematoxylin-eosin (HE) staining. Results A transplanted tumor model was established successfully. The volumes of HMGN2 groups and masculine control groups were smaller than those of the negative groups. Mouse weight did not differ among the three groups. Average minor weight of the negative group was (0.38-4-0.19) g, that of the HMGN2 group was (0.21+0.15) g, and that of the DDP group was (0.23-4-0.16) g. These factors indicated no statistically significant difference among the three groups. The tumor inhibitory rate of HMGN2 group was 45.71%, and that of the positive group was 39.44%. Based on evaluation by naked eye, the tumor in the negative group was larger than that in other groups. In addition, cell necrosis was observed during HE staining. Conclusion HMGN2 could significantly inhibit growth of the transplanted tumor in nude mice.
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