[关键词]
[摘要]
目的: 探讨胸苷酸合成酶( thymidylate synthase,TYMS) 在胰腺癌细胞中mRNA 表达差异及其表达水
平与胰腺癌细胞化疗敏感性的关系。方法: 使用Real-time PCR 及Taqman 探针法检测其TYMS mRNA 表达水
平,利用CCK-8 试剂盒检测6 株胰腺癌细胞( AsPC-1,MIAPaCa-2,Capan-1,SU 86. 86,PANC-1 与COLO 357)
对5-FU 的化疗敏感性。结果: 在6 株人胰腺癌细胞中TYMS 基因mRNA 表达水平各不相同,TYMS 基因mRNA
表达水平相比较发现,细胞株AsPC-1,MIAPaCa-2,Capan-1,SU 86. 86 中TYMS mRNA 水平低( 低TS 表达组) ,
而PANC-1 与COLO 357 中TYMS mRNA 表达水平较高( 高TS 表达组) ,低TS 表达组的细胞在低中高3 个不同
药物浓度下对5-FU 抑制率分别为0. 692±0. 137,0. 781±0. 102 与0. 885±0. 083。同浓度下高TS 表达组的细胞
对5-FU 抑制率分别为0. 370±0. 157,0. 548±0. 018 与0638±0. 020。TYMS mRNA 表达低的细胞对5-FU 化疗敏
感性明显高于TS 表达高的细胞,差异有统计学意义( P<0. 05) 。结论: 在胰腺癌细胞株中,TYMS mRNA 表达水
平与其对5-FU 的化疗敏感性密切相关。
[Key word]
[Abstract]
Objective: To investigate the relationship between the TS mRNA expression levels and
chemosensitivity of different pancreatic cancer cells to 5 - FU. Methods: The chemosensitivity of six
pancreatic carcinoma cell lines to 5-FU in vitro was evaluated with CCK-8 kit. TS mRNA expression
of pancreatic carcinoma cells was analyzed by Real-time PCR. Results: Pancreatic carcinoma cells As-
PC-1,MIAPaCa - 2,Capan - 1 and SU 86. 86 expressed low amounts of TS mRNA ( Low TYMS
group) . Cells of PANC-1 and COLO 357 expressed high amounts of TS mRNA( High TYMS group) in
six cell lines. The inhibition rates( IRs) of Low TYMS group cells for low,middle and high dose to 5-
FU were 0. 692 ±0. 137,0. 781 ±0. 102 and 0. 885 ±0. 083 respectively. The IRs of High TS Protein
group for low,middle and high dose to 5-FU were 0. 370±0. 157,0. 548±0. 018 and 0638±0. 020,
respectively.IRs of 5-FU tended to be lower in the cellswith high TYMS mRNA expression than those with low
TS mRNA expression. The difference reached statistical significance( P<0. 05) . Conclusions:TYMS mRNA
expression levels were significantly correlated to 5-FU sensitivity in six pancreatic carcinomacell lines.
[中图分类号]
R657. 5
[基金项目]
收稿日期: 2013-11-17; 修回日期: 2014-01-13
基金项目: 国家自然科学基金( 81360339) ; 内蒙古自然科学基金( 2013MS1184)
作者简介: 张强( 1981-) ,男,内蒙古医科大学附属医院普外科主治医师,医学博士。