当前位置: 首页 > 文章 > 猪生长激素基因在昆虫细胞中的分泌表达 畜牧兽医学报 2002,33 (5) 482-485
Position: Home > Articles > Secretion Expression of Porcine Growth Hormone Gene in Insect Cells Chinese Journal of Animal and Veterinary Sciences 2002,33 (5) 482-485

猪生长激素基因在昆虫细胞中的分泌表达

作  者:
欧阳菁;龙綮新;杨林;王珣章
单  位:
中山大学生物防治国家重点实验室;生物医药中心
关键词:
猪生长激素;杆状病毒表达载体系统;基因表达;N-糖基化分析
摘  要:
将PCR扩增得到的 pGH基因插入到带有 polh启动子和 gp6 7强信号肽序列的杆状病毒转移载体pAcGP6 7 A中 ,构建重组质粒 pGP6 7pGH ,并与线性化致死缺失型苜蓿丫纹夜蛾核多角体病毒 (AcMNPV OCC-)基因组DNA共转染Sf9细胞 ,构建出重组病毒AcMNPV pGP6 7 pGH OCC-。感染重组病毒的Hi5细胞的表达产物的SDS PAGE和Westernblot结果表明 ,细胞可溶蛋白和培养液上清中均有一条分子量约为 2 2kDa的猪生长激素特异性反应带 ,且培养液上清中的目的蛋白分子量比天然pGH略大一些。薄层扫描仪扫描估测可知 ,重组pGH分别占细胞可溶蛋白的 8 98%和培养液上清总蛋白的 3 6 1%。将表达 96h的培养液上清浓缩液进行N 糖基化分析 ,结果显示重组 pGH无N 糖基化加工修饰。
译  名:
Secretion Expression of Porcine Growth Hormone Gene in Insect Cells
作  者:
OUYANG Jing,LONG Qing-xin,YANG Lin,WANG Xun-zhang (State Key Laboratory for Biological Control, Biopharmaceutical Center,Zhongshan University,Guangzhou 510275,China)
关键词:
Porcine growth hormone;Baculovirus expression vector system;Gene expression;N-glycosylation
摘  要:
The porcine growth hormone gene was obtained by PCR and inserted into the baculovirus expression vector of pAcGP67-A which contains polh promoter and gp67 signal sequence.The recombinant plasmid of pGP67-pGH was cotransfected Hi5 cells with the linearized parental virus Ac MNPV-OCC - DNA to produce the recombinant virus Ac MNPV-pGP67-pGH-OCC -.SDS-PAGE and Western blot analysis showed that pGH gene products were observed,those in the supernatant with a little larger molecular weight size than the natural pGH's. The expressed pGH accumulated up to about 3.61% of the supernatant proteins and 8.98% of the soluble cellular proteins respectively as estimated by CS-930 scanning of the SDS-PAGE.The N-glycosylation analysis showed the recombinant pGH had no N-glycosylation.

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