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Survivin T34A对乳腺癌细胞株4T1增殖和凋亡的影响

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摘要 目的观察Survivin基因第34位苏氨酸(Thr)突变成丙氨酸(Ala)形成的显性负突变体Survivin T34A的抗肿瘤作用及机制。方法将小鼠高转移性乳腺癌细胞株4T1培养至对数生长期后随机分为A、B、C、D四组,A组加入PBS,B、C、D组分别加入以6μg阳离子脂质体包裹的Wild Survivin质粒、PORF-9 null质粒、Survivin T34A质粒各2μg进行转染。48 h后MTT法检测细胞生存率,倒置相差显微镜下观察细胞形态变化,流式细胞仪检测细胞凋亡率。结果 D组观察到细胞凋亡形态学的特征性改变,且其细胞生存率显著低于其余三组、细胞凋亡率显著高于其余三组(P均<0.05)。结论 Survivin T34A质粒可通过抑制肿瘤细胞生长并诱导其凋亡发挥抗肿瘤作用,此为乳腺癌的生物治疗提供了新思路。
机构地区 贵州省人民医院
出处 《山东医药》 CAS 北大核心 2010年第35期31-32,共2页 Shandong Medical Journal
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参考文献7

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