目的 :观察增殖型腺病毒载体介导的 m IL - 1 2基因对胃癌细胞的杀伤作用。 方法 :利用携带 m IL - 1 2基因的增殖型腺病毒转染胃癌细胞株 SGC- 790 1 ,通过病毒增殖实验、细胞病理效应、酶链免疫反应等分别观察病毒复制能力、病毒对胃...目的 :观察增殖型腺病毒载体介导的 m IL - 1 2基因对胃癌细胞的杀伤作用。 方法 :利用携带 m IL - 1 2基因的增殖型腺病毒转染胃癌细胞株 SGC- 790 1 ,通过病毒增殖实验、细胞病理效应、酶链免疫反应等分别观察病毒复制能力、病毒对胃癌细胞的杀伤作用及 m IL - 1 2表达水平。结果 :携带 m IL - 1 2基因的增殖型腺病毒转染胃癌细胞株 SGC- 790 1具有肿瘤增殖型腺病毒 ONYX- 0 1 5的相似作用 ,可在肿瘤细胞内复制、增殖并杀死肿瘤细胞 ,而并不能在正常细胞内复制及增殖。该病毒在肿瘤细胞内的增殖能力是传统载体的近千倍。该载体携带的 m IL - 1 2基因的表达量明显高于传统基因治疗的腺病毒载体体系 ,是传统基因治疗表达量的百倍。 结论 :CNHK2 0 0 - m IL - 1 2能在胃癌细胞中增殖并杀死胃癌细胞 ,并提高目的基因的表达水平 。展开更多
To study the inhibitory effect of Nogo-A shRNA on cell line PC12, the Nogo-A shRNA （short hairpin RNA, or shRNA） was designed and synthesized. The annealed shRNA template was inserted into plasmid pGenesil-1 contain...To study the inhibitory effect of Nogo-A shRNA on cell line PC12, the Nogo-A shRNA （short hairpin RNA, or shRNA） was designed and synthesized. The annealed shRNA template was inserted into plasmid pGenesil-1 containing enhanced green fluorescent protein （EGFP） gene by gene cloning technique to generate eukaryotic expression vector. The recombinant plasmid was transfected into PC12 cells by lipofecamine2000 and the mRNA and protein expression level of Nogo-A gene was detected by RT-PCR and Western blotting 48 h after the transfection. Gene sequencing showed that that the Nogo-A shRNA eukaryotic expression vector was successfully constructed. No significant change was found in the Nogo-A mRNA and protein expression level in empty vector-transfected group as compared with controls （P〉0.05）, while the expression level in shRNA-transfected group decreased significantly （P〈0.05）. It is concluded that the pGenesil-1/Nogo-AshRNA recombinant plasmid can effectively suppress the expression of Nogo-A gene in PC12 cells.展开更多
目的 :构建双亚基共表达鼠白细胞介素 - 12 (m IL- 12 )真核表达质粒 ,并观察其在体内外的表达。方法 :将m IL - 12 p35和 p4 0全长编码 c DNA构建在 pc DN A 3.1载体上 ,然后把 p35表达单元 (CMV- p35 - BGH PA)插入pc DNA 3.1/ p4 0载...目的 :构建双亚基共表达鼠白细胞介素 - 12 (m IL- 12 )真核表达质粒 ,并观察其在体内外的表达。方法 :将m IL - 12 p35和 p4 0全长编码 c DNA构建在 pc DN A 3.1载体上 ,然后把 p35表达单元 (CMV- p35 - BGH PA)插入pc DNA 3.1/ p4 0载体 ,使两个目的基因均受各自的启动子 CMV控制 ,构建成 m IL - 12双亚基共表达质粒 p Cm IL -12 ,并进行体内外表达。结果 :p Cm IL - 12在体外转染 COS- 7细胞后 ,经 EL ISA证实有 m IL- 12表达 ,其表达上清能在体外明显增强小鼠 NK细胞活性。小鼠皮内注射 p Cm IL - 12亦能增强小鼠 NK细胞活性。结论 :所构建的质粒在体内外均能表达有生物学活性的 m IL-展开更多
基金This work is supported by the Major Interna-tional Cooperation Projectof National Natural Science Foundation ofChina ( 3 0 12 0 160 82 4) and the State High Technology R&D Projectof China( 2 0 0 1AA2 170 3 1)
文摘目的 :观察增殖型腺病毒载体介导的 m IL - 1 2基因对胃癌细胞的杀伤作用。 方法 :利用携带 m IL - 1 2基因的增殖型腺病毒转染胃癌细胞株 SGC- 790 1 ,通过病毒增殖实验、细胞病理效应、酶链免疫反应等分别观察病毒复制能力、病毒对胃癌细胞的杀伤作用及 m IL - 1 2表达水平。结果 :携带 m IL - 1 2基因的增殖型腺病毒转染胃癌细胞株 SGC- 790 1具有肿瘤增殖型腺病毒 ONYX- 0 1 5的相似作用 ,可在肿瘤细胞内复制、增殖并杀死肿瘤细胞 ,而并不能在正常细胞内复制及增殖。该病毒在肿瘤细胞内的增殖能力是传统载体的近千倍。该载体携带的 m IL - 1 2基因的表达量明显高于传统基因治疗的腺病毒载体体系 ,是传统基因治疗表达量的百倍。 结论 :CNHK2 0 0 - m IL - 1 2能在胃癌细胞中增殖并杀死胃癌细胞 ,并提高目的基因的表达水平 。
基金This project was supported by grants from the National Natural Science Foundation of China (No 30471775)a research program of Science and Technology of Hubei Province,China (No 2005AA301C15)
文摘To study the inhibitory effect of Nogo-A shRNA on cell line PC12, the Nogo-A shRNA （short hairpin RNA, or shRNA） was designed and synthesized. The annealed shRNA template was inserted into plasmid pGenesil-1 containing enhanced green fluorescent protein （EGFP） gene by gene cloning technique to generate eukaryotic expression vector. The recombinant plasmid was transfected into PC12 cells by lipofecamine2000 and the mRNA and protein expression level of Nogo-A gene was detected by RT-PCR and Western blotting 48 h after the transfection. Gene sequencing showed that that the Nogo-A shRNA eukaryotic expression vector was successfully constructed. No significant change was found in the Nogo-A mRNA and protein expression level in empty vector-transfected group as compared with controls （P〉0.05）, while the expression level in shRNA-transfected group decreased significantly （P〈0.05）. It is concluded that the pGenesil-1/Nogo-AshRNA recombinant plasmid can effectively suppress the expression of Nogo-A gene in PC12 cells.
文摘目的 :构建双亚基共表达鼠白细胞介素 - 12 (m IL- 12 )真核表达质粒 ,并观察其在体内外的表达。方法 :将m IL - 12 p35和 p4 0全长编码 c DNA构建在 pc DN A 3.1载体上 ,然后把 p35表达单元 (CMV- p35 - BGH PA)插入pc DNA 3.1/ p4 0载体 ,使两个目的基因均受各自的启动子 CMV控制 ,构建成 m IL - 12双亚基共表达质粒 p Cm IL -12 ,并进行体内外表达。结果 :p Cm IL - 12在体外转染 COS- 7细胞后 ,经 EL ISA证实有 m IL- 12表达 ,其表达上清能在体外明显增强小鼠 NK细胞活性。小鼠皮内注射 p Cm IL - 12亦能增强小鼠 NK细胞活性。结论 :所构建的质粒在体内外均能表达有生物学活性的 m IL-
