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survivin反义寡核苷酸对MCF-7乳腺癌细胞的生长抑制作用

Inhibitory effect of survivin anti-sense oligo nucleotide on growth of MCF-7 breast cancer cells
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摘要 为研究survivin反义寡核苷酸对MCF-7乳腺癌细胞的生长抑制作用,以脂质体介导反义寡核苷酸组(ASODN/lip)、无义寡核苷酸组(NODN/lip)及RPM I 1 6 4 0培养液的空白对照组(lip)转染人乳腺癌MCF-7细胞系。用Hoechst 3 3 2 5 8/PI双重染色观察MCF-7细胞的形态学改变;透射电镜观察细胞超微结构;流式细胞仪检测细胞周期和细胞凋亡的变化;DNA凝胶电泳观察凋亡情况。结果示:转染后的细胞结构呈凋亡样改变;转染后细胞凋亡显著增加,并出现G2/M期阻滞现象;在6 0 0 ng/mL和8 0 0 ng/mL ASODN/lip组的电泳图谱上呈现明显的“梯状”条带。提示反义核酸技术能使乳癌细胞中的凋亡抑制基因survivin表达下调,诱导乳腺癌细胞发生凋亡;这可为survivin靶向治疗提供理论依据。
出处 《中国普通外科杂志》 CAS CSCD 2006年第4期291-294,共4页 China Journal of General Surgery
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