文章摘要
宋毕清时开网△ 杨士勇.米非司酮对胰腺癌细胞耐药株Patu8988/FU 的逆转作用[J].,2012,12(1):20-22
米非司酮对胰腺癌细胞耐药株Patu8988/FU 的逆转作用
Study of Mifepristone on Reversing Multidrug Resistance of HumanPancreatic Cancer Cell Line Patu8988/FU
  
DOI:
中文关键词: 米非司酮  胰腺癌  耐药逆转
英文关键词: Mifepristone  Pancreatic cancer  Multidrug resistence
基金项目:江苏省自然科学基金(H200945)
作者单位
宋毕清时开网△ 杨士勇 南京医科大学附属南京第一医院普外科 
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中文摘要:
      目的:研究米非司酮(mifepristone, MIF)对胰腺癌多药耐药细胞株Patu8988/FU 耐药性的逆转作用。方法:采用四甲基偶氮 唑盐(MTT)比色法检测MIF 对胰腺癌细胞Patu8988 及胰腺癌耐药细胞株Patu8988/FU 增殖的影响,选择对两种细胞生长抑制 率≤5 %的浓度为其非细胞毒性剂量;观察非毒性剂量的MIF 作用72 h 后Patu8988/FU 细胞对5-FU 耐药性的逆转效果。结果:① MIF 浓度≤10 μmol.L-1 对Patu8988 及Patu8988/FU 于细胞的增殖均无抑制作用(P>0.05);20 μmol.L-1 和40μmol.L-1 MIF 对 Patu8988 及Patu8988/FU 于细胞的增殖均有抑制作用(P<0.05),MIF 对Patu8988 及Patu8988/FU 细胞增殖具有剂量依赖性;② 加入梯度浓度5-FU 后Patu8988 细胞和Patu8988/FU 细胞的IC50 分别为(2.394±0.011)μg.ml-1、(49.87±4.026)μg.ml-1 (P< 0.01),耐药倍数为20.83;Patu8988 及Patu8988/FU 细胞加入5-FU 后分别与2.5 μmol.L-1、5μmol.L-1、10 μmol.L-1 MIF 共同孵育72 h 后,Patu8988/FU 细胞对5-FU 耐药性的逆转倍数分别为1.42、1.71、3.10;Patu8988/FU 对5-FU 的敏感性明显增加(P<0.05),而 Patu8988 细胞对5-FU 的敏感性并未改变(P>0.05)。结果还显示MIF 作用后Patu8988/FU 对5-FU 的敏感性变化具有剂量依赖 性。结论:MIF 对胰腺癌多药耐药细胞株Patu8988/FU 耐药性的有逆转作用。
英文摘要:
      Objective: To study whether mifepristone could reverse multidrug resistance of Patu8988/FU cells. Methods: MTT was used to study the proliferation and sensitivity of Patu8988 and Patu8988/FU cell lines, to chose non-cytotoxic concentrations by making the inhibition rate of these two cell lines less than 5%, to observe the resersal of drug resistance of 5-FU after 72 hours treatment with miferpristone of non-cytotoxic concentrations. Results: ① Miferprestone with concentration of no more than 10 μmol.L-1 did not affect the proliferation of Patu8988 and Patu8988/FU cell lines (P>0.05), but 20 μmol.L-1,40 μmol.L-1 miferprestone did (P<0.05). Miferprestone could dose-dependently inhibit the prolification of Patu8988 and Patu8988/FU cells. ② IC50 of 5-FU to Patu8988 and Patu8988/FU cells were (2.394±0.011) μg.ml-1 and (49.87±4.026) μg.ml-1, respectively,(P<0.01), the resistance multiples of 5-FU were 20.83 in Patu8988/FU cell lines. After 2.5 μmol.L-1, 5 μmol.L-1, 10 μmol.L-1 miferprestone added, the reversal multiples of drug resistance were 1.42, 1.71, 3.10 ,respectively. Miferprestone increased the sensitivety of Patu8988/FU to 5-FU (P<0.05), while did not change that of Patu8988(P>0.05). Conclusion: Miferprestone can reverse the drug resistance on Patu8988/FU cell lines.
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