目的:研究腺病毒介导IL-24基因(Ad.IL-24)与化疗药物联用对肝癌细胞株PLC/PRF/5增殖的抑制作用。方法:用Ad.IL-24分别联合化疗药物氟尿嘧啶(fluorouracil,5-Fu)和表柔比星(epirubicin,EPI)处理培养的肝癌细胞株PLC/PRF/5,MTT法检测细胞...目的:研究腺病毒介导IL-24基因(Ad.IL-24)与化疗药物联用对肝癌细胞株PLC/PRF/5增殖的抑制作用。方法:用Ad.IL-24分别联合化疗药物氟尿嘧啶(fluorouracil,5-Fu)和表柔比星(epirubicin,EPI)处理培养的肝癌细胞株PLC/PRF/5,MTT法检测细胞增殖抑制率,流式细胞术(FCM)检测细胞周期和凋亡率。结果:10 MOI Ad.IL-24与25μg/ml5-Fu联合应用后72h,PLC/PRF/5细胞增殖抑制率达(67.4±0.58)%,显著高于单用Ad.IL-24组的(46.8±0.74)%和5-Fu组的(29.3±0.60)%(均P<0.05);10MOIAd.IL-24与2.5μg/mlEPI联合应用后72h,PLC/PRF/5细胞增殖抑制率达(72.5±0.92)%,显著高于单用Ad.IL-24组的(46.8±0.74)%和EPI组的(32.2±0.69)%(均P<0.05)。流式细胞术检测结果显示,Ad.IL-24与5-Fu或EPI联合应用明显导致细胞在G2/M期阻滞;Ad.IL-24+5-Fu组细胞凋亡率为(52.15±2.32)%,显著高于单用Ad.IL-24组的(28.36±3.49)%和5-Fu组的(8.27±2.61)%(均P<0.05);Ad.IL-24+EPI组细胞凋亡率为(58.67±1.73)%,显著高于单用Ad.IL-24组的(28.36±3.49)%和EPI组的(11.82±1.91)%(均P<0.05)。结论:Ad.IL-24与5-Fu或EPI联用能显著提高对肝癌细胞株PLC/PRF/5增殖的抑制作用。展开更多
Objective:To explore the inhihitive and apoptosis inductive effect of IL-24 genes on CD133^+laryngeal cancer cells in Hep-2 line.Methods:Human peripheral blood monocytes were isolated.The total RNA was extracted by us...Objective:To explore the inhihitive and apoptosis inductive effect of IL-24 genes on CD133^+laryngeal cancer cells in Hep-2 line.Methods:Human peripheral blood monocytes were isolated.The total RNA was extracted by using Trizol method and reverse transcripted into cDNA using RT-PCR method.Primers P1 and P2 was designed for the amplification of human IL-24 genes.After confirmation of agarose gel electrophoresis tests,TA was cloned into pMD19-T simple vector.Nhe Ⅰ and Xho Ⅰ double digesting human IL-24 and pIRES2-ZsGreen1 and eukaryotic expression vector were used to establish the pIRES2-ZsGreen1-hIL-24 vector,and detected by enzyme digestion and gene sequencing methods.Flow cytometry(FCM) was used to isolate CD133^+ cells from Hep-2 cells.CD133^+ cells were transfected with pIRES2-ZsGreen1-hIL-24 through liposome 2000.After detection,MTT and FCM were used to observe the effect of IL-24 gene on CD133^+ laryngeal cancer Hep-2 cells.Results:Lipotin mediated transfection of recombinant pIRES2-ZsGreen1-hIL-24 plasmid into CD133^+ Hep-2 could expressed IL-24 gene in cells stably.MTT results showed that IL-24 transfected group was significantly suppressed compared to empty vector group and control group(P<0.05);FCM results showed that the apoptosis rate of experimental group increased significantly compared to empty vector group and control group(P<0.05).Conclusions:IL-24 gene expressions can inhibit proliferation of CD133^+laryngeal cells in Hep-2 line and promote their apoptosis.展开更多
背景与目的以人骨髓间充质干细胞(human bone marrow mesenchymal stem cells,hBMSCs)作为抑癌基因IL-24的细胞载体的研究目前未见报道。应用Gateway法构建共表达增强型绿色荧光蛋白(enhanced green uorescentprotein,EGFP)基因和IL-24...背景与目的以人骨髓间充质干细胞(human bone marrow mesenchymal stem cells,hBMSCs)作为抑癌基因IL-24的细胞载体的研究目前未见报道。应用Gateway法构建共表达增强型绿色荧光蛋白(enhanced green uorescentprotein,EGFP)基因和IL-24基因的慢病毒载体,探讨其对hBMSCs的转导情况,为今后肿瘤的基因治疗奠定基础。方法应用DNA重组技术构建含有IL-24和EGFP基因的慢病毒表达载体,并与慢病毒包装系统(ViraPowerTMLentiviralPackaging Mix)共转染293FT细胞,收集上清,纯化浓缩,测定重组病毒的滴度。取重组慢病毒感染hBMSCs,通过嘌呤霉素筛选并纯化hBMSCs,应用实时荧光定量PCR(quantitative PCR,qPCR)及ELISA法分别检测hBMSCs中IL-24mRNA及IL-24蛋白水平的表达情况。结果成功构建了共表达IL-24和EGFP基因的重组慢病毒载体,经包装、纯化及浓缩,病毒滴度为7.25×107PFU/mL。重组慢病毒转导hBMSCs后,通过筛选获得纯化,转导效率可达到100%。qPCR检测示:转导组IL-24mRNA表达明显高于未转导组(P<0.05);ELISA法检测显示转导组hBMSCs上清液IL-24蛋白表达40g/L,未转导组为阴性。结论构建的携带IL-24基因的重组慢病毒载体可有效转导hBMSCs,表达IL-24蛋白。展开更多
基金国家自然科学基金(No.30672364)天津市应用基础研究基金重点资助项目(No.07JCZDJC07600)+1 种基金Supported by the National Natural Science Foundation of China(No.30672364)The Key Program of Applied Basic Research Foundation of Tianjin(No.07JCZDJC07600)
文摘目的:研究腺病毒介导IL-24基因(Ad.IL-24)与化疗药物联用对肝癌细胞株PLC/PRF/5增殖的抑制作用。方法:用Ad.IL-24分别联合化疗药物氟尿嘧啶(fluorouracil,5-Fu)和表柔比星(epirubicin,EPI)处理培养的肝癌细胞株PLC/PRF/5,MTT法检测细胞增殖抑制率,流式细胞术(FCM)检测细胞周期和凋亡率。结果:10 MOI Ad.IL-24与25μg/ml5-Fu联合应用后72h,PLC/PRF/5细胞增殖抑制率达(67.4±0.58)%,显著高于单用Ad.IL-24组的(46.8±0.74)%和5-Fu组的(29.3±0.60)%(均P<0.05);10MOIAd.IL-24与2.5μg/mlEPI联合应用后72h,PLC/PRF/5细胞增殖抑制率达(72.5±0.92)%,显著高于单用Ad.IL-24组的(46.8±0.74)%和EPI组的(32.2±0.69)%(均P<0.05)。流式细胞术检测结果显示,Ad.IL-24与5-Fu或EPI联合应用明显导致细胞在G2/M期阻滞;Ad.IL-24+5-Fu组细胞凋亡率为(52.15±2.32)%,显著高于单用Ad.IL-24组的(28.36±3.49)%和5-Fu组的(8.27±2.61)%(均P<0.05);Ad.IL-24+EPI组细胞凋亡率为(58.67±1.73)%,显著高于单用Ad.IL-24组的(28.36±3.49)%和EPI组的(11.82±1.91)%(均P<0.05)。结论:Ad.IL-24与5-Fu或EPI联用能显著提高对肝癌细胞株PLC/PRF/5增殖的抑制作用。
基金supported by Jilin Province Natural Science Foundation of China.No:20130101151JCChinese Ministry of Education Projects of Doctoral New Teachers.No:20120061120092
文摘Objective:To explore the inhihitive and apoptosis inductive effect of IL-24 genes on CD133^+laryngeal cancer cells in Hep-2 line.Methods:Human peripheral blood monocytes were isolated.The total RNA was extracted by using Trizol method and reverse transcripted into cDNA using RT-PCR method.Primers P1 and P2 was designed for the amplification of human IL-24 genes.After confirmation of agarose gel electrophoresis tests,TA was cloned into pMD19-T simple vector.Nhe Ⅰ and Xho Ⅰ double digesting human IL-24 and pIRES2-ZsGreen1 and eukaryotic expression vector were used to establish the pIRES2-ZsGreen1-hIL-24 vector,and detected by enzyme digestion and gene sequencing methods.Flow cytometry(FCM) was used to isolate CD133^+ cells from Hep-2 cells.CD133^+ cells were transfected with pIRES2-ZsGreen1-hIL-24 through liposome 2000.After detection,MTT and FCM were used to observe the effect of IL-24 gene on CD133^+ laryngeal cancer Hep-2 cells.Results:Lipotin mediated transfection of recombinant pIRES2-ZsGreen1-hIL-24 plasmid into CD133^+ Hep-2 could expressed IL-24 gene in cells stably.MTT results showed that IL-24 transfected group was significantly suppressed compared to empty vector group and control group(P<0.05);FCM results showed that the apoptosis rate of experimental group increased significantly compared to empty vector group and control group(P<0.05).Conclusions:IL-24 gene expressions can inhibit proliferation of CD133^+laryngeal cells in Hep-2 line and promote their apoptosis.
文摘背景与目的以人骨髓间充质干细胞(human bone marrow mesenchymal stem cells,hBMSCs)作为抑癌基因IL-24的细胞载体的研究目前未见报道。应用Gateway法构建共表达增强型绿色荧光蛋白(enhanced green uorescentprotein,EGFP)基因和IL-24基因的慢病毒载体,探讨其对hBMSCs的转导情况,为今后肿瘤的基因治疗奠定基础。方法应用DNA重组技术构建含有IL-24和EGFP基因的慢病毒表达载体,并与慢病毒包装系统(ViraPowerTMLentiviralPackaging Mix)共转染293FT细胞,收集上清,纯化浓缩,测定重组病毒的滴度。取重组慢病毒感染hBMSCs,通过嘌呤霉素筛选并纯化hBMSCs,应用实时荧光定量PCR(quantitative PCR,qPCR)及ELISA法分别检测hBMSCs中IL-24mRNA及IL-24蛋白水平的表达情况。结果成功构建了共表达IL-24和EGFP基因的重组慢病毒载体,经包装、纯化及浓缩,病毒滴度为7.25×107PFU/mL。重组慢病毒转导hBMSCs后,通过筛选获得纯化,转导效率可达到100%。qPCR检测示:转导组IL-24mRNA表达明显高于未转导组(P<0.05);ELISA法检测显示转导组hBMSCs上清液IL-24蛋白表达40g/L,未转导组为阴性。结论构建的携带IL-24基因的重组慢病毒载体可有效转导hBMSCs,表达IL-24蛋白。
