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白藜芦醇对视网膜母细胞瘤SO-Rb50增殖抑制作用的观察 被引量:1

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摘要 目的观察白藜芦醇对人视网膜母细胞瘤SO-Rb50细胞增殖的影响,并探讨作用机制。方法体外培养的视网膜母细胞瘤SO-RB50细胞,分别加入6.25、12.5、25、50、100μmol/L白藜芦醇,对照组加入等体积0.5%DMSO,分别孵育24、48 h,MTT方法测定细胞活力,流式细胞术(FCM)测定细胞周期的变化。50μmol/L白藜芦醇孵育48h后,收集细胞,RT-PCR、Western blot分别测定PCNA、Cyclin D、Rb和P16 mRNA和蛋白的表达水平。结果白藜芦醇对视网膜母细胞瘤SO-Rb50增殖具有明显的抑制作用;白藜芦醇处理后,G1期的细胞均显著增加,S期细胞明显减少;50μmol/L白藜芦醇处理48 h显著降低了PCNA和Cyclin D的mRNA和蛋白表达水平,明显提高了Rb和P16mRNA和蛋白表达水平(均P<0.01)。结论白藜芦醇对视网膜母细胞瘤细胞增殖具有明显的抑制作用,其机制可能是下调PCNA和Cyclin D表达、上调Rb和P16表达,进而影响其细胞周期进程,发挥其抑制视网膜母细胞瘤细胞增殖的作用。
出处 《中成药》 CAS CSCD 北大核心 2012年第11期2223-2225,共3页 Chinese Traditional Patent Medicine
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