色素上皮细胞衍生因子对脑胶质瘤细胞凋亡的影响  被引量:3

The effect of pigment epithelium-derived factor on apoptosis of glioma cells

在线阅读下载全文

作  者:张弢[1] 关明[1] 吕元[1] 

机构地区:[1]复旦大学附属华山医院检验科,上海200040

出  处:《中华检验医学杂志》2008年第4期421-424,共4页Chinese Journal of Laboratory Medicine

基  金:基金项目:教育部博士点基金资助项目(20030246060);上海市青年科技启明星计划资助项目(04QMX1408);复旦大学世纪之星资助项目;上海市临床医学重点建设学科项目

摘  要:目的 本研究试图通过检测人脑胶质瘤U87细胞中色素上皮细胞衍生因子(PEDF)以及凋亡相关蛋白的表达,探讨其表达在胶质瘤的增殖和细胞凋亡调控中的作用。方法将100μg/ml的PEDF加入U87细胞中(PEDF处理组),同时以未加PEDF蛋白的胶质瘤细胞作对照组(U87con),采用四甲基偶氮唑蓝法检测PEDF对胶质瘤细胞U87增殖率的影响;流式细胞术检测胶质瘤细胞是否凋亡;Western-blot(免疫印迹)检测PEDF处理组凋亡相关蛋白p16的变化。结果 实验数据显示:与对照组相比,当PEDF浓度为100μg/ml时,对U87的抑制率为(54.29±0.62)%,PEDF处理组胶质瘤细胞的增殖明显减慢(t=2.63,P〈0.05);PEDF处理过的凋亡细胞产生明显增多,annexin V^+和PI-的细胞为(21.84±0.36)%,提示胶质瘤细胞处于凋亡早期(t=2.86,P〈0.05);PEDF诱导的发生凋亡的胶质瘤细胞中,p16蛋白的表达量明显增加(0.82±0.09),与对照组相比(0.43±0.03),差异具有统计学意义。结论 PEDF与p16协同作用,可能在胶质瘤细胞凋亡的调控中起着重要的作用,从而抑制胶质瘤细胞增殖。Objective To assess the impact of pigment epithelium-derived factor (PEDF) on the proliferation and apoptosis of the glioma cells by detecting expression of apoptosis related proteins. Methods U87 cells were treated with PEDF ( 100 μg/ml, U87PEDF ), or without PEDF ( U87con ), cell proliferation assays were performed by MTr assay to test the effect of PEDF on proliferation of glioma cells; Apoptosis assays were performed by flow-cytometric analysis; Western-blot was used for evaluating the expression of p16 protein. Results The induced inhibitony rates of glioma cells by PEDF were ( 54. 29 ± 0. 62 ) % compared with the control (t = 2. 63, P 〈 0. 05 ). The apoptosis assay showed that (21.84 ± 0. 36 ) % of PInegative/annexin V-positive was present in the U87PEDF cells. The appoptosis was associated with the increases of pl6 protein (0. 82±0.09) compared with the control (0.43± 0. 03, P 〈 0. 05 ). Conclusion PEDF may play a significant role in apoptosis regulation and proliferation of glioma cell accompanied with the increase of the p16 protein.

关 键 词:神经胶质瘤 眼蛋白质类 神经生长因子 舍平类 蛋白质P16 细胞凋亡 

分 类 号:R686[医药卫生—骨科学]

 

参考文献:

正在载入数据...

 

二级参考文献:

正在载入数据...

 

耦合文献:

正在载入数据...

 

引证文献:

正在载入数据...

 

二级引证文献:

正在载入数据...

 

同被引文献:

正在载入数据...

 

相关期刊文献:

正在载入数据...

相关的主题
相关的作者对象
相关的机构对象