二甲双胍抑制胰腺癌干细胞生长的实验研究

被引:8
作者
刘佳玲
童陈琦
机构
[1] 浙江省人民医院
关键词
二甲双胍; 胰腺肿瘤; 干细胞; 凋亡;
D O I
暂无
中图分类号
R735.9 [胰腺肿瘤];
学科分类号
100214 ;
摘要
[目的]探讨二甲双胍对胰腺癌干细胞的生长抑制作用。[方法]利用无血清培养基的超低粘附培养方法获得干细胞球样胰腺癌PANC1细胞,然后通过定量PCR检测干细胞球样PANC1细胞中CD133及PDX-1的表达情况,验证胰腺癌干细胞;利用干细胞球样PANC1细胞的MTT实验、流式周期检测实验、Annexin-Ⅴ细胞凋亡实验、定量PCR凋亡因子检测实验,研究二甲双胍对干细胞球样PANC1细胞增殖、周期及凋亡的影响;借助干细胞球样PANC1胰腺癌细胞构建鼠移植瘤模型,观察二甲双胍对肿瘤生长的影响。[结果 ]二甲双胍能够明显抑制干细胞球样胰腺癌PANC1细胞增殖,且具有浓度依赖性,最大抑制率为81.3%,半数有效抑制浓度IC50为(11.94±1.43)mmol/L;二甲双胍对干细胞球样PANC1细胞的G0/G1期有阻滞作用;二甲双胍可以诱导干细胞球样PANC1细胞凋亡,与空白对照组比较,二甲双胍组干细胞球样PANC1细胞的Bcl-2 mRNA减少,而Bad、Bax mRNA的表达增加;干细胞球样PANC1细胞接种至裸鼠皮下均能成瘤,且二甲双胍能够明显抑制移植瘤的生长。[结论]二甲双胍能够抑制胰腺癌干细胞增殖,阻滞G0/G1期,并诱导胰腺癌干细胞凋亡,发挥抗胰腺癌干细胞生长的作用。
引用
收藏
页码:467 / 472
页数:6
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