Wang Wentao, Tang Zhaohua, Huo Gang, et al. Erythropoietin promotes the proliferation of glioblastoma cells through up-regulation of Cyclin D1 in vitro[J]. Journal of Chongqing Medical University, 2016,41(8):787-791.
Wang Wentao, Tang Zhaohua, Huo Gang, et al. Erythropoietin promotes the proliferation of glioblastoma cells through up-regulation of Cyclin D1 in vitro[J]. Journal of Chongqing Medical University, 2016,41(8):787-791. DOI: 10.13406/j.cnki.cyxb.000978.
EPO+cyclin D1拮抗剂组细胞Cyclin D1 m RNA及蛋白的表达水平明显降低(m RNA:P=0.009
蛋白:P=0.000
荧光定量:P=0.013)
流式细胞仪检测细胞增殖指数则有显著下降(P=0.000)
同时细胞增殖能力和速度较EPO处理组明显降低(CCK8:第3天P=0.000
第5天P=0.000
倍增时间:P=0.001)。结论:本研究发现EPO可显著促进胶质母细胞瘤的体外增殖
上调细胞周期关键蛋白Cyclin D1的表达
加快细胞增殖周期可能是其重要的分子机制。
Abstract
Objective:To explore the effect of recombinant human erythropoietin(rh EPO)on the proliferation of glioblastoma cells in vitro and its mechanism. Methods:U87 cells were cultured in vitro and divided into three groups:control group treated with equal value of PBS;EPO treatment group cultured with a dose of 0.1 U/ml EPO for seven days;EPO + Cyclin D1 antagonist group treated with EPO(0.1 U/ml)and Cyclin D1 antagonist(5 μmol/L)for seven days. The proliferative ability was measured by cell counting Kit-8 assay and double time;Cyclin D1 expression was detected by RT-PCR
Western blot and cell immunofluorescence
respectively. The cell cycle was analyzed by flow cytometry. Results:EPO promoted the proliferation of U87 cells and the m RNA and protein levels of Cyclin D1. Cyclin D1 antagonist inhibited the m RNA and protein levels of Cyclin D1 induced by EPO;U87 cells were blockaded at G1 stage
and the proliferation of ability was significantly reduced. Conclusion:EPO may significantly promote the proliferation of U87 cells through upregulation the expression of Cyclin D1;its molecular mechanism may relate with accelerated cell proliferation cycle.