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Molecular mechanism of cell cycle regulation of spatholobus suberectus flavonoids effective part on the A549 human lung adenocarcinoma cell based on CKI
Author(s): 
Pages: 3217-3220
Year: Issue:  12
Journal: China Journal of Traditional Chinese Medicine and Pharmacy

Keyword:  鸡血藤黄酮类有效部位 细胞周期阻滞 细胞周期蛋白依赖激酶抑制因子 人肺腺癌A549细胞;
Abstract: 目的:从细胞周期蛋白激酶抑制因子(CKI)途径入手探讨鸡血藤黄酮类有效部位(SSCE)对人肺癌A549细胞的周期阻滞作用的分子机制。方法:采用RT-PCR法检测人肺腺癌A549细胞中p21、p27 mRNA表达;应用Western Blotting法测定人肺腺癌A549细胞中p21、p27蛋白表达。结果:160mg/L SSCE作用于人肺腺癌A549细胞24h后,细胞内p21 mRNA表达较对照组增加(P<0.01);p21蛋白含量较对照组高(P<0.01),而细胞内p27 mRNA表达及蛋白含量与对照组比较差异无统计学意义;160mg/L SSCE作用人肺腺癌A549细胞48h后,细胞内p21、p27 mRNA表达与对照组比较差异无统计学意义;细胞内p21、p27蛋白含量与对照组比较差异无统计学意义。结论:SSCE上调p21 mRNA转录水平及蛋白表达量是引起人肺腺癌A549细胞G2/M期细胞周期阻滞的机制之一;p21、p27对SSCE引起的人肺腺癌A549细胞G0/G1期阻滞无直接作用。
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