• 華中科技大學(xué)同濟(jì)醫(yī)學(xué)院附屬同濟(jì)醫(yī)院普通外科(武漢430030);;
  • 通訊作者: 鄒聲泉,Email: sqzou@tjh.tjmu.edu.cn;

目的觀察反義DNA甲基轉(zhuǎn)移酶3b(DNMT3b)基因真核表達(dá)載體轉(zhuǎn)染對(duì)人膽管癌QBC-939細(xì)胞中DNMT3b基因表達(dá)的影響。
方法構(gòu)建反義DNMT3b基因真核表達(dá)載體,通過脂質(zhì)體轉(zhuǎn)染到人膽管癌細(xì)胞株QBC-939中,G418篩選得到穩(wěn)定轉(zhuǎn)染細(xì)胞株,PCR鑒定外源性neoR基因在轉(zhuǎn)染細(xì)胞中的表達(dá)以確定轉(zhuǎn)染是否成功。半定量RT-PCR觀察轉(zhuǎn)染前后DNMT3b基因mRNA水平的變化,流式細(xì)胞術(shù)檢測(cè)轉(zhuǎn)染前后DNMT3b蛋白的變化。
結(jié)果反義DNMT3b基因真核表達(dá)載體轉(zhuǎn)染能使人膽管癌QBC-939細(xì)胞中DNMT3b基因的mRNA水平從0.956±0.053降低至0.209±0.023,差異有統(tǒng)計(jì)學(xué)意義(P<0.01); 流式細(xì)胞術(shù)檢測(cè)結(jié)果顯示,DNMT3b蛋白水平從(75.38±3.22)%降低到(29.87±3.46)%,差異有統(tǒng)計(jì)學(xué)意義(P<0.01)。
結(jié)論反義DNMT3b基因轉(zhuǎn)染能降低人膽管癌QBC-939細(xì)胞中DNMT3b基因的表達(dá)水平,為研究DNMT3b基因功能及其在膽管癌細(xì)胞中的作用提供了方法和實(shí)驗(yàn)依據(jù)。

引用本文: 左石,郭偉,劉民鋒,董涇青,徐立寧,羅劍,鄒聲泉. 反義DNMT3b基因真核表達(dá)載體轉(zhuǎn)染對(duì)人膽管癌細(xì)胞DNMT3b基因表達(dá)的影響. 中國(guó)普外基礎(chǔ)與臨床雜志, 2006, 13(1): 56-60. doi: 復(fù)制

版權(quán)信息: ?四川大學(xué)華西醫(yī)院華西期刊社《中國(guó)普外基礎(chǔ)與臨床雜志》版權(quán)所有,未經(jīng)授權(quán)不得轉(zhuǎn)載、改編

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  1. 1. Das PM, Singal R. DNA methylation and cancer [J]. J Clin Oncol, 2004; 22(22)∶4632.
  2. 2. Egger G, Liang G, Aparicio A, et al. Epigenetics in human disease and prospects for epigenetic therapy [J]. Nature, 2004; 429(6990)∶457.
  3. 3. Hermann A, Gowher H, Jeltsch A. Biochemistry and biology of mammalian DNA methyltransferases [J]. Cell Mol Life Sci, 2004; 61(19-20)∶2571.
  4. 4. Sambrook J, Russell DW, 黃培堂, 等譯. 分子克隆實(shí)驗(yàn)指南 [M]. 第3版. 北京: 科學(xué)出版社, 2002∶629~630.
  5. 5. Jin F, Dowdy SC, Xiong Y, et al. Upregulation of DNA methyltransferase 3B expression in endometrial cancers [J]. Gynecol Oncol, 2005; 96(2)∶531.
  6. 6. Girault I, Tozlu S, Lidereau R, et al. Expression analysis of DNA methyltransferases 1, 3A, and 3B in sporadic breast carcinomas [J]. Clin Cancer Res, 2003; 9(12)∶4415.
  7. 7. Nagai M, Nakamura A, Makino R, et al. Expression of DNA (5cytosin)methyltransferases (DNMTs) in hepatocellular carcinomas [J]. Hepatol Res, 2003; 26(3)∶186.
  8. 8. Beaulieu N, Morin S, Chute IC, et al. An essential role for DNA methyltransferase DNMT3B in cancer cell survival [J]. J Biol Chem, 2002; 277(31)∶28176.
  9. 9. 唐啟彬, 孫華文, 鄒聲泉. 5氮2脫氧胞苷體內(nèi)外抑制膽管癌細(xì)胞生長(zhǎng)的研究 [J]. 中華普通外科雜志, 2004; 19(5)∶295.
  10. 10. 唐啟彬, 孫華文, 鄒聲泉. 5氮2脫氧胞苷對(duì)膽管癌細(xì)胞株生長(zhǎng)周期及凋亡的影響 [J]. 華中科技大學(xué)學(xué)報(bào)(醫(yī)學(xué)版), 2004;33(1)∶34.
  11. 11. Beaulieu N, Morin S, Chute IC, et al. An essential role for DNA methyltransferase DNMT3B in cancer cell survival [J]. J Biol Chem, 2002; 277(31)∶28176.
  12. 12. Lee LK, Roth CM. Antisense technology in molecular and cellular bioengineering [J]. Curr Opin Biotechnol, 2003; 14(5)∶505.