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受体相互作用蛋白140敲低对小鼠小胶质瘤细胞增殖的影响 被引量:3

Effects of receptor-interacting protein 140 gene knockdown on the proliferation of microglioma cells: experiment with rat microglioma cells
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摘要 目的探讨受体相互作用蛋白(RIP)140基因敲低对小鼠小胶质瘤细胞(BV-2)增殖的影响。方法用脂质体转染方法将RIP140-短发夹RNA(shRNA)质粒导入BV-2细胞,用嘌呤霉素筛选稳定表达RIP140-shRNA的细胞系,用实时定量PCR和Western印迹法检测RIP140敲低的效果,用四甲基偶氮唑蓝(MTY)法检测RIP140敲低对细胞增殖的影响。结果成功构建稳定表达RIP140-shRNA的BV-2-71674和BV-2-71080;与BV-2细胞相比,BV-2-71674和BV-2-71080细胞中RIP140的表达无论mRNA水平还是蛋白质水平均明显低,下调率(mRNA)分别为73%和75%(均P〈0.01);MTT法检测显示,BV-2细胞在24、48、72、96h 4个时间点增殖率分别为3.03±0.01、7.36±0.08、14.15±0.25、23.35±0.09,BV-2-71674细胞则分别为2.15±0.03、6.43±0.08、11.77±0.31、18.47±0.04,BV-2-71080细胞分别为1.77±0.03、4.74±0.25、10.03±0.02、17.66±0.21;BV-2-71674和BV-2-71080细胞增殖率均明显低于BV-2细胞,差异均有统计学意义(均P〈0.01)。结论RIP140敲低可以抑制BV-2细胞的增殖。 Objective To investigate the effects of receptor-interacting protein (RIP) 140 gene knockdown on the proliferation of microglioma cells. Methods Mouse microglioma cells of the line BV-2 were cultured and transfected with 2 kinds of recombinant RIP140-shRNA plasmids (V2MM-71674 and V2MM-71080) or blank plasmid MSCV-EGFP. Real-time PCR and Western blotting were used to detect the mRNA and protein expression of RIP140; and the cell proliferation was detected by MTT assay. Results There were not significant differences in the RIP140 mRNA and protein expression between the BV-2 and BV-2-MGCV-EGFP groups. Compared to those of the BV-2 group, the RIP140 mRNA expression levels of the BV-2-71674 and BV-2-71080 groups were lower by 73% and 75% respectively. The protein expression levels of the BV-2-71674 and BV-2-71080 groups were remarkably lower than those of the BV-2 and BV- MSGV-EGFP groups. MTT assay showed that there were not significant differences in the proliferation rates at different time points between the BV-2 and BV-2-MSCV-EGFP groups, however, the proliferation rates at the time points of 24, 48, 72, and 96 h of the BV-2-71674 and BV-2-71080 groups were significantly lower than those of the BV-2 group ( all P 〈 0. 01 ). Conclusion RIP140 gene knockdown effectively inhibits the proliferation of microglioma cells.
出处 《中华医学杂志》 CAS CSCD 北大核心 2008年第40期2857-2861,共5页 National Medical Journal of China
基金 基金项目:国家重点基础研究发展计划基金资助项目(2001CB510303)
关键词 神经胶质瘤 细胞增殖 受体相互作用蛋白140 Glioma Cell proliferation RIP140
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参考文献12

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同被引文献34

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