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奈达铂对鼻咽癌CNE-2细胞放射增敏研究 被引量:4

Radiosensitization of Nedaplatin in Nasopharyngeal Carcinoma CNE-2 Cell
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摘要 [目的]观察奈达铂对鼻咽癌CNE-2细胞系放射敏感性的影响,初步探讨其作用机制。[方法]采用CCK-8法检测奈达铂对鼻咽癌CNE-2细胞存活率影响。克隆形成实验计算各处理组的细胞存活分数,单靶多击模型拟合细胞存活曲线并求出放射敏感性参数及放射增敏比。流式细胞仪检测奈达铂用药前后的细胞周期分布及凋亡率。WesternBlot检测p-AKT和bcl-2蛋白表达。[结果]奈达铂对鼻咽癌CNE-2细胞生长有抑制作用,具有时间及浓度依赖性。在奈达铂为0.25mg/L时,SERD0和SERDq分别为1.16和1.32;奈达铂0.5mg/L时,SERD0和SERDq分别达1.23和1.82。以0、0.25、0.5mg/L奈达铂作用CNE-2细胞24h时G2/M期比例分别为(3.66±0.38)%、(13.84±0.45)%和(42.09±0.79)%,凋亡率分别为(4.28±1.20)%、(6.60±1.15)%和(9.20±0.65)%,组间差异均有统计学意义(P<0.05)。WesternBlot结果显示:药物组、单纯照射组及联合照射组较对照组p-AKT、bcl-2蛋白表达减少,且联合照射组p-AKT、bcl-2蛋白表达低于其它各组。[结论]奈达铂对鼻咽癌CNE-2细胞系具有放射增敏作用,其机制可能与改变细胞周期分布及增加凋亡等有关。
出处 《中国肿瘤》 CAS 2012年第12期935-939,共5页 China Cancer
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同被引文献36

  • 1王莉,刘汉锋,蔡正文,罗婕.奈达铂体外诱导肺腺癌A549细胞凋亡及其作用机制[J].西安交通大学学报(医学版),2012,33(3):332-335. 被引量:3
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  • 10毕明宏,郑宏波,葛霞,江浩,申健,郑荣生,秦凤展.奈达铂对Lewis肺癌放射增敏的实验研究[J].中国新药杂志,2009,18(9):830-834. 被引量:7

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