番茄红素对人前列腺癌PC-3细胞周期的阻滞作用

目的:研究番茄红素对人前列腺癌PC-3细胞周期的阻滞作用及分子机制.方法 体外培养PC-3细胞,采用MTT、细胞计数法、流式细胞仪和Western blotting方法分析番茄红素对PC-3细胞增殖的抑制作用、对细胞周期分布的影响及细胞周期相关蛋白的表达.结果 不同浓度番茄红素(1.5、3.0、6.0和12.0μmol/L)处理PC-3细胞48 h后,生长抑制率分别为11.34%、19.59%、30.92%、52.58%;常规培养PC-3细胞群体倍增时间为29.04 h,番茄红素浓度由1.5 μmol/L增加到12.0 μmoL/L时,其细胞群体倍增时间由36.58 h延长到88.32 h;流式细胞仪分析显示,番茄红素呈浓度依赖性将PC-3细胞阻滞在G0/G1期;在细胞周期阻滞的同时有P21 WAF1蛋白表达上调.结论 番茄红素对PC-3细胞的抑制增殖作用与G0/G1期阻滞有关,其分子机制可能与调节P21 WAF1表达有关.

Arrest Effect of Lycopen on Cell Cycle in Human Prostatic Cancer Cell

Objective To investigate the arrest effect of Lycopen in the cell cycle of human prostatic carcinoma PC-3 cell line and its molecular mechanism. Mothods The growth inhibitions of PC-3 cell line were measured by MTT assay and cell counting.Phase distribution of cell cycle was analyzed by flow cytometry.Expression of P21WAF1 was determined by western blotting analysis. Results MTT assay showed that lycopen inhibited growth of PC-3 cells significantly and exhibited a dose dependent model.Adding 1.5,3.0,6.0 and...