目的構(gòu)建攜帶多藥耐藥相關(guān)蛋白(MRP)全長基因的真核表達(dá)載體,并研究其在人肝癌細(xì)胞株HepG2中的表達(dá)特性。
方法雙酶切克隆質(zhì)粒pGEM-mrp1,獲得含mrp1全長的cDNA片段,再將此片段定向克隆到哺乳動(dòng)物真核表達(dá)載體pCI-neo的多克隆位點(diǎn),經(jīng)脂質(zhì)體法轉(zhuǎn)染HepG2細(xì)胞,G418篩選獲得穩(wěn)定表達(dá)的轉(zhuǎn)基因細(xì)胞系HepG2/mrp1。RT-PCR檢測HepG2/mrp1細(xì)胞mrp1 mRNA表達(dá),流式細(xì)胞儀檢測HepG2/mrp1細(xì)胞MRP的含量。
結(jié)果本實(shí)驗(yàn)所構(gòu)建的攜帶mrp1全長基因的表達(dá)載體pCI-mrp1能在HepG2細(xì)胞中表達(dá),形成穩(wěn)定的多藥耐藥細(xì)胞系HepG2/mrp1,其多藥耐藥性、MRP含量及mrp1 mRNA表達(dá)均較未轉(zhuǎn)染該載體的HepG2細(xì)胞顯著增加。結(jié)論將攜帶全長人多藥耐藥相關(guān)蛋白基因mrp1的載體導(dǎo)入人肝癌細(xì)胞株能夠建立高效、穩(wěn)定的多藥耐藥細(xì)胞株,為進(jìn)一步研究多藥耐藥的機(jī)理及逆轉(zhuǎn)多藥耐藥提供理想的細(xì)胞模型。
引用本文: 王新平,嚴(yán)律南,潘光棟,夏冬,張明滿,茍興華,趙蘭英. 多藥耐藥真核表達(dá)載體的構(gòu)建及其生物學(xué)特性. 中國普外基礎(chǔ)與臨床雜志, 2006, 13(2): 163-166. doi: 復(fù)制
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- 2. Nagata J, Kijima H, Hatanaka H, et al. Reversal of drug resistance using hammerhead ribozymes against multidrug resistanceassociated protein and multidrug resistance 1 gene [J]. Int J Oncol, 2002; 21(5)∶ 1021.
- 3. Lage H, Perlitz C, Abele R, et al. Enhanced expression of human ABCtransporter tap is associated with cellular resistance to mitoxantrone [J]. FEBS Lett, 2001; 503(2-3)∶179.
- 4. Stavrovskaya AA. Cellular mechanisms of multidrug resistance of tumor cells [J]. Biochemistry, 2000; 65(1)∶95.
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- 6. Loe DW, Deeley RG, Cole SPC. Biology of the multidrug resistanceassociated protein, MRP [J]. Euro J Cancer,1996; 32A(6)∶945.
- 7. 姚輝華, 劉忠, 嚴(yán)律南, 等. 多藥耐藥相關(guān)蛋白基因在原發(fā)性肝細(xì)胞癌組織中的表達(dá)及意義 [J]. 中國普外基礎(chǔ)與臨床雜志, 2003; 10(6)∶576.
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