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过表达转录因子21对肺癌细胞裸鼠成瘤的影响

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摘要 目的探讨转录因子(TCF)21对肺癌细胞裸鼠成瘤的影响。方法选取人肺癌细胞SPC-A1,细胞转染TCF21过表达载体(过表达组)和空载体(空载体组),设置对照组,对照组中只加入转染试剂,培养48 h,Western印迹检测细胞中TCF21的表达水平。将过表达TCF21的肺癌细胞接种到裸鼠皮下,分别在5、10、15、20 d测量肿瘤的长径和短径,计算肿瘤体积并绘制肿瘤生长曲线。在20 d时,取出肿瘤,称量肿瘤重量,并计算瘤重抑瘤率,同时Western印迹检测肿瘤组织中B细胞淋巴瘤/白血病-2(Bcl-2)、活化的含半胱氨酸的天冬氨酸蛋白水解酶(Cleaved Caspase)-3、TCF21表达水平。结果过表达组肺癌细胞中TCF21水平明显高于对照组(P<0.01)。过表达组肿瘤生长与对照组相比明显受到抑制(P<0.01)。空载体组和过表达组的抑瘤率分别为(7.52±0.07)%和(72.24±0.61)%,且过表达组肿瘤重量明显低于对照组(P<0.01)。过表达组肿瘤组织中Cleaved Caspase-3、TCF21表达水平明显高于对照组,而Bcl-2水平明显低于对照组(均P<0.01)。结论 TCF21能够抑制肺癌细胞的裸鼠成瘤能力。
出处 《中国老年学杂志》 CAS 北大核心 2017年第19期4760-4762,共3页 Chinese Journal of Gerontology
基金 江苏省前瞻性研究专项基金项目(No.BE2013629)
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