检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
作 者:余翔[1] 王兴伟[1] 李泉[1] 毛永欢 骆霞岗[1] 竺慧 沈佳佳[1] 王伟林[1] 喻春钊[1]
机构地区:[1]南京医科大学第二附属医院普通外科,210011
出 处:《中华实验外科杂志》2014年第8期1752-1755,共4页Chinese Journal of Experimental Surgery
基 金:国家自然科学基金资助项目(30972910、81172269);中国博士后基金资助项目(20060390294);江苏省自然科学基金资助项目(SBK201123832)
摘 要:目的 观察吉西他滨对胰腺癌细胞增殖、凋亡及保罗样激酶-1(PLK-1)表达的影响.方法 采用不同浓度的吉西他滨处理胰腺癌AsPC-1细胞,在电镜下观察细胞的形态,噻唑蓝(MTT)法测定细胞生长抑制情况;不同浓度(2、5 μmol/L)的吉西他滨处理细胞12、24、48、72 h后,流式细胞分析法检测细胞凋亡,以半定量逆转录-聚合酶链反应(RT-PCR)和Western blot检测PLK-1 mRNA及PLK-1蛋白的表达.结果 MTT结果示随吉西他滨浓度增加,细胞增殖率明显下降(P<0.05);流式细胞分析法检测凋亡结果示:处理组凋亡率较空白对照组明显增加(P<0.05);RT-PCR和Western blot检测PLK-1 mRNA及PLK-1蛋白的表达结果显示,不同时间点PLK-1 mRNA相对表达量分别为:对照组0.70 ±0.15、0.65 ±0.27、0.72 ±0.13、0.68±0.30;2 μmnol/L组:0.88 ±0.58、0.95±0.53、2.36±0.57、3.53 ±0.89;5 μmol/L组:0.89 ±0.60、1.02±0.32、3.95±1.84、4.52 ±2.25及PLK-1蛋白的表达水平分别为:对照组:0.82 ±0.41、0.78 ±0.46、1.01 ±0.05、0.88±0.25;2 μmol/L组:0.89±0.28、1.61 ±0.88、1.66 ±0.18、3.28±1.33;5μ.mol/L组:0.85±0.36、1.89±0.18、2.73±0.78、4.32±2.13,也相应升高(P<0.05).结论 吉西他滨能诱导AsPC-1细胞凋亡,其机制可能与细胞内的PLK-1水平改变有关.PLK-1基因表达水平与胰腺癌化疗药物敏感性密切相关.Objective To investigate the effect of gemcitabine on proliferation,apoptosis and polo-like kinase-1 (PLK-1) expression of human pancreatic cancer cell line AsPC-1 cells.Methods AsPC-1 cells were treated with various concentrations of gemcitabine for different time.The effect of gemcitabine on survival of AsPC-1 cells was determined by methyl thiazol tetrazolium (MTT) assay.The effect of gemcitabine on apoptosis of AsPC-1 cells was mearsured by flow cytometry with various concentrations of 2 and 5 μmol/L,and at different time points (12,24,48,and 72 h).The expression levels of PLK-1 mRNA and protein were detected by semi-quantitative reverse transcription-polymerase chain reaction (RT-PCR) and Western blotting,respectively.Results Gemcitabine decreased the proliferation of pancreatic cancer cells (P < 0.05),and the apoptosis rate was significantly increased (P < 0.05).After treatment with gemcitabine,the expression levels of PLK-1 mRNA (control:0.70 ±0.15,0.65 ±0.27,0.72 ±0.13,0.68 ±0.30;2 μmol/L:0.88 ±0.58,0.95 ±0.53,2.36 ±0.57,3.53 ±0.89;5 μmol/L:0.89 ± 0.60,1.02 ± 0.32,3.95 ± 1.84,4.52 ± 2.25) and protein (control:0.82 ± 0.41,0.78 ± 0.46,1.01 ±0.05,0.88 ±0.25 ;2 μmol/L:0.89 ±0.28,1.61 ±0.88,1.66 ±0.18,3.28 ± 1.33 ;5 μmol/L:0.85 ± 0.36,1.89 ± 0.18,2.73 ± 0.78,4.32 ± 2.13) were also increased significantly in pancreatic cancer cells (P < 0.05).Conclusion Gemcitabine can influence the proliferation and apoptosis of AsPC-1 cells probably by the expression changes of PLK-1.
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:18.224.3.26