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1、乙酰肝素酶shRNA双基因共表达真核载体的构建和筛选论文刘玉,辛晓燕,毛敬,张潍【关键词】乙酰肝素酶ConstructionandidentificationofeukaryoticexpressionvectorexpressingdoubleshRNAsectionstargetingheparanasegene【Abstract】AIM:ToconstructandidentifyeukaryoticexpressionvectorexpressingdoubleshRNAsectionstargetingheparanasegene(HpashRNA).METHODS:
2、Sixpairsofoligonucleotidesicallysynthesized.AfterrandomlyconnectinganoligonucleotideandanotheroneidpGenesil1oterandterminationcode,themongreenfluorescenceprotein(EGFP)geneandNeogene.Inthisetryandfluorescencemicroscope.TheinhibitioneffectivenessofHpaproteinmunohistochemicalstaining.RESULTS:Th
3、econstructedeukaryoticexpressionvectorseffectivelysuppressedtheHpaexpressionintransfectedcells.The3vectorsofdifferentshorthairpinRNAofHpaeffectivelysuppressedtheexpressioninSKOV3(P0.01).CONCLUSION:ETAFECTENE转染试剂盒操作方法转染,以含800mg/LG418的RPMI1640培养液培养4,接收光为530nm.用Cellquest软件进行数据获取与分析.1.2.6免疫组化染色检
4、验细胞Hpa蛋白表达细胞爬片,乙醇固定,按SABC方法染色.胞质中出现棕黄色颗粒为阳性,每张切片在400倍显微镜下随机计数300个细胞.阴性(-):不着色;阳性(+):细胞质内有细小稀疏黄色颗粒;():细胞质内有较密的细小黄色颗粒;():细胞内有明显的细小黄色颗粒.将结果按下面公式计算.细胞Hpa蛋白表达积分=(+)%×1+()%×2+()%×3.2结果2.1pGenesil1HpashRNA重组质粒的构建重组质粒用BamHI做酶切鉴定,阳性克隆产生400bp的片段.证实已将合成的DNA片段成功插入载体pGenesil1中(图1).2.2测序分析经测序结果证实3个质粒构建部分的
5、碱基序列与设计DNA片段完全一致,碱基无突变.表明已成功构建含两段目的shRNA片段的重组质粒载体.2.3转染效率稳定转染4orBiol,2004,25:329-336.[2]ZhuJ,MuscoML,GraceMJ.ThreecolorfloetryanalysisoftricistronicexpressionofeBFP,eGFP,andeYFPusingEMCVIRESlinkages[J].Cytometry,1999,37:51-59.[3]BoydDD,NakajimaM.Involvementofheparanaseintumormetastases:Anean
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7、Ther,2005,12:5-11.[7]FougerollesA,ManoharanM,MeyersR,etal.RNAinterferenceinvivo:ToallinhibitoryRNAbasedtherapeutics[J].MethodsEnzymol,2005,392:278-296.[8]SekiM,IanprostatePC3carcinomaxenograft,usingtransferringfacilitatedlipofectiongenedeliverystra