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篇名: | 叶黄素对鼻咽癌C666-1 细胞的抑制作用及其机制 |
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摘要: | 目的:研究叶黄素对鼻咽癌C666-1 细胞的抑制作用及其机制。方法:以0(空白对照)、20、40、80、160 mg/L的叶黄素培养 C666-1 细胞0、12、24、48 h,以CCK-8 法测定细胞增殖率,以TUNEL法测定细胞凋亡率,以Western blot 法测定细胞腺苷酸活化蛋 白激酶(AMPK)和mTOR通路中核糖体蛋白S6 激酶(S6K)、S6 蛋白的磷酸化程度。结果:与空白对照比较,80、160 mg/L 叶黄素 作用48 h 及160 mg/L叶黄素作用12、24、48 h 的细胞增殖率均降低(P<0.05);80、160 mg/L叶黄素作用48 h 及160 mg/L叶黄素作 用24、48 h 的细胞凋亡率增加(P<0.05);80、160 mg/L 叶黄素作用48 h 的细胞内磷酸化AMPK增加,磷酸化S6K、S6 蛋白减少 (P<0.05)。结论:叶黄素能有效抑制C666-1 细胞增殖,可能通过促进AMPK磷酸化,抑制S6K、S6蛋白磷酸化诱导其凋亡。
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ABSTRACT: | OBJECTIVE:To study the inhibitory effects and mechanism of lutein on nasopharyngeal carcinoma C666-1 cells. METHODS:C666-1 cells were stimulated by lutein at different concentrations [0(blank control),20,40,80,160 mg/L] for different time(0,12,24,48 h). The proliferation rate of cells was determined by CCK-8 assay,and apoptotic rate of cells was determined by TUNEL method;Western blot was adopted to determine the phosphorylation of S6K and S6 proteins of AMPK and mTOR pathway. RESULTS:Compared with blank control group,proliferation rate of C666-1 cells was significantly reduced after treated with lutein(80,160 mg/L)for 48 h and lutein(160 mg/L)for 12,24,48 h(P<0.05). After treated with lutein(80,160 mg/L)for 48 h and lutein(160 mg/L)for 24,48 h,cell apoptosis was significantly increased(P<0.05). Lutein(80,160 mg/L) could promote intracellular AMPK phosphorylation,and inhibits mTOR pathway S6K,S6 protein phosphorylation after 48 h treatment( P<0.05). CONCLUSIONS:Lutein can inhibit nasopharyngeal carcinoma C666-1 cell proliferation and induce nasopharyngeal carcinoma cell apoptosis and inhibit S6K,S6 protein phosphorylation through promoting AMPK phosphorylation. |
期刊: | 2016年第27卷第1期 |
作者: | 沈敏,刘辉,万俐佳 |
AUTHORS: | SHEN Min,LIU Hui,WAN Lijia |
关键字: | 叶黄素;鼻咽癌;C666-1 细胞;增殖;凋亡 |
KEYWORDS: | Lutein;Nasopharyngeal carcinoma;C666-1 cells;Proliferation;Apoptosis |
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