共查询到19条相似文献，搜索用时 421 毫秒
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［目的］研制小反刍兽疫羊痘活载体疫苗。［方法］利用PCR技术扩增小反刍兽疫病毒H基因,克隆到pGEM-T easy载体,Nhe Ⅰ和Hin-d Ⅲ双酶切重组质粒,将目的片段插入到真核表达载体pEGFP-N1-P7.5中,得到重组载体pEGFP-N1-P7.5-H,重组载体Hin-d Ⅲ、NheⅠ双酶切片段EGFP-P7.5 H平末端连接到KpnⅠ 酶切后的载体pUC119-TK中,得到通用转移载体pUC119-TK-EGFP-P7.5-H。［结果］经酶切鉴定及PCR扩增检测,表明构建载体正确。pUC119-TK-EGFP-P7.5-H转染羊痘病毒感染的BHK21细胞,48 h后报告基因表达。［结论］该研究为研制小反刍兽疫基因工程活载体疫苗奠定基础。 相似文献
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《（《农业科学与技术》）编辑部》2008,(2)
[Objective] The aim of this study was to provide a method for solving the problems in preparing BAC vector with High-copy plasmid pUC119-Bluelox BAC.[Method] With selecting a proper single restriction site,sequences of a single copy BAC vector plasmid were inserted into proper site of High-copy plasmid pUC119 vector.[Result] The gene sequence of BAC vector lost control function of single copy number in new plasmid pUC119-BAC and was copied through High-copy form. The gene sequence of BAC vector basic function was completely cutted off through single enzyme digestion and the control function of single copy could be recovered by auto-connection.[Conclusion] The High-copy pUC119-BAC plasmid was used to copy and amplify high copy of basic function gene sequence in BAC vector,besides that it could be used to construct transfer vector of molecular cloned recombinant virus or BAC library. 相似文献
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CUI Hong-yu WANG Ya-ping XU Ming-ju XUE Yong-zhi SHI Xing-ming LAN De-song WANG Yun-feng TONG Guang-zhi 《（《农业科学与技术》）编辑部》2008,(2)
[Objective] The aim of this study was to provide a method for solving the problems in preparing BAC vector with High-copy plasmid pUC119-Bluelox BAC.[Method] With selecting a proper single restriction site,sequences of a single copy BAC vector plasmid were inserted into proper site of High-copy plasmid pUC119 vector.[Result] The gene sequence of BAC vector lost control function of single copy number in new plasmid pUC119-BAC and was copied through High-copy form. The gene sequence of BAC vector basic function was completely cutted off through single enzyme digestion and the control function of single copy could be recovered by auto-connection.[Conclusion] The High-copy pUC119-BAC plasmid was used to copy and amplify high copy of basic function gene sequence in BAC vector,besides that it could be used to construct transfer vector of molecular cloned recombinant virus or BAC library. 相似文献
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含O型口蹄疫病毒P1-2A-3C基因的羊痘病毒弱毒株转移载体的构建 总被引：1，自引：0，他引：1
利用已构建的口蹄疫病毒O/China99毒株的pMD18-T-P1-2A-3C载体和p-EGFP-N1-P7.5载体,分别通过HindⅢ、NheⅠ酶切,将基因P1-2A-3C连接到线性载体p-EGFP-N1-P7.5,构建了载体p-EGFP-N1-P7.5-P1-2A-3C。将EGFP-P7.5-P1-2A-3C基因整体通过平末端连接到KpnⅠ酶切后的载体pUC119-TK中,得到重组载体pUC119-TK-EGFP-P7.5-P1-2A-3C。通过PCR扩增、酶切鉴定及序列测定。结果表明,成功构建了一侧启动表达P1-2A-3C基因,一侧启动表达标记基因EGFP的pUC119-TK-EGFP-P7.5-P1-2A-3C转移载体。 相似文献
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湍杆咏幌低?为筛选番茄cDNA 《贵州农业科学》2007,(6)
jing 100081)The Magnaporthe grisea protein elicitor pemG1 gene was amplified by PCR with the EcoR I and Xho I restriction sites incorporated into the primers,digested by restriction enzymes and ligated with the vector pLexA to construct recombinant bait plasmid pLexA-PEMG1.After the transform of recombinant plasmid into yeast strain EGY48[p8op-lacZ],the autonomous report 相似文献
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GAO Xuejun TONG Huili YIN Deyun ZHANG Li Key Laboratory of Dairy Science Ministry of Education Northeast Agricultural University Harbin China 《东北农业大学学报(英文版)》2008,15(4):15-19
To investigate the expression of antibacterial peptide CecropinB cDNA in dairy goat mammary gland epithelial cells,the CecropinB gene was cloned and was inserted into a eukaryotic vector pECFP-C1 to construct the recombinant plasmid pECFP-B by genetic engineering technique.Recombinant plasmid pECFP-B was transfected into dairy goat mammary gland epithelial to detect the bactericidal activity of CecropinB.The expression of CecropinB was also detected.The result of RT-PCR demonstrated CecropinB gene was expressed in transfected cells.CecropinB recombinant plasmid DNA was injected into udders and CecropinB was expressed in mammary gland,exhibiting bactericidal activity to Staphylococcus aureus in vivo experiments. 相似文献
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HEHong-xuan ZHANGXi-chen YINJi-gang LIJian-hua YANGJu 《中国农业科学(英文版)》2004,3(8):634-640
The CP15/60 gene encoding the CP15/60 surface protein of sporozoites in Cryptosporidium parvum was obtained by PCR so as to research the nucleic vaccine against C.parvum. The eukaryotic expressing vector pcDNA3-15/60 was constructed by inserting CP15/60 gene into pcDNA3 ( ) in Xho Ⅰ and EcoR Ⅰ. A vaccination protocol was the adult pregnant goats inoculated intranasally with the pcDNA3-15/60 plasmid and their offspring were infected with C.parvum oocysts. The results showed that the pcDNA3-15/60 plasmid can induce the immune response of goats and the vaccinated goats can transfer the immunity to offspring conferring protection against C.parvum infection. These suggested that the recombinant plasmid could be a DNA vaccine candidate. 相似文献
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采用RT-PCR方法分别扩增口蹄疫病毒O/China99毒株的P1-2A和3C基因,将P1-2A基因连接到pUC119载体,3C基因连接到pMD18-T载体,分别得到重组载体pUC119-P1-2A和pMD18-T-3C;将重组载体pUC119-P1-2A用HindⅢ、BamHⅠ酶切,重组载体pMD18-T-3C用BamHⅠ、NheⅠ酶切;利用酶切所得到的基因片段P1-2A、3C有共同的BamHⅠ酶切位点,实现基因P1-2A、3C的连接,构建重组载体pMD18-T-P1-2A-3C.将基因P1-2A-3C与启动EGFP表达的双向串连痘苗病毒启动子P7.5相连,构建载体p-EGFP-N1-P7.5-P1-2A-3C,并进行PCR扩增、酶切鉴定及序列测定.结果表明:试验成功构建了一侧启动表达P1-2A-3C基因,一侧启动表达标记基因EGFP的表达盒p-EGFP-N1-P7.5-P1-2A-3C. 相似文献
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[目的]构建以pUC19质粒为基础可利用XcmⅠ内切酶制备的T载体。[方法]化学合成2条含有双XcmI酶切位点的互补寡聚核苷酸链,经过变性、复性后克隆入pUC19质粒的HindⅢ和BamHⅠ位点之间,通过XcmI酶切后得到一个线性化的带有3末端突出一个T碱基的T载体。[结果]经TA克隆验证,制备的pUC19-HB-T载体对PCR产物的克隆率达到95%以上。[结论]所构建的pUC19-HB-T载体可用于PCR产物的克隆、测序及后续分子生物学操作。 相似文献
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[目的]为研究转生长相关基因对猪的作用。[方法]采用RT-PCR方法,从13/17罗伯逊易位杂合子猪小肠组织中提取总RNA,将其纯化后作为PCR扩增模板,参考GenBank公布的猪Ghrelin的mRNA序列设计合成具有Nhe I和Hind III双酶切位点引物,扩增获得Ghrelin基因cD-NA全长序列。将准确的Ghrelin基因片段克隆于 pMD19-T simple Vector后进行序列分析,获得猪Ghrelin基因cDNA全长基因片段。经Nhe I和Hind III双酶切,将 Ghrelin基因cDNA片段连接到真核表达载体pEGFP-N1,获得真核表达载体的重组质粒pEGFP-Ghrelin。重组质粒转染猪成纤维细胞,观察标记基因荧光蛋白的表达。[结果]13/17罗伯逊易位杂合子猪的Ghrelin基因与已发表的序列相同,并成功获得具备猪Ghrelin基因全长cDNA序列的真核表达载体pEGFP-Ghrelin。[结论]构建的真核表达载体可以用于转基因猪的进一步试验,同时也为研究Ghrelin的调节机制奠定基础。 相似文献
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法氏囊B细胞λ轻链基因编码蛋白在大肠杆菌中的表达 总被引：1，自引：0，他引：1
为获得鸡λ轻链基因的表达蛋白,采用聚合酶链反应从鸡法氏囊B细胞cDNA文库中扩增出分泌表达蛋白的编码基因;用限制性内切酶消化后,插入克隆载体pUC19中。经PCR鉴定与序列测定证实后,以亚克隆法构建于原核表达载体PET43a的相应酶切位点。经过基因序列测定、BamHⅠ和HindⅢ双酶切鉴定证实克隆载体正确插入载体PET43a。转化宿主菌BL21(DE3),经IPTG诱导、SDS-PAGE分析表明目的蛋白得到表达;且能与His-Taq单抗相结合。 相似文献
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CUI Hong-yu WANG Ya-ping XU Ming-ju XUE Yong-zhi SHI Xing-ming LAN De-song WANG Yun-feng TONG Guang-zhi 《农业科学与技术》2008,9(2)
[Objective] The aim of this study was to provide a method for solving the problems in preparing BAC vector with High-copy plasmid pUC119-Bluelox BAG. [Method] With 8electing a proper single restriction site, sequences of a single copy BAC vector plasmid were inserted into proper site of High-copy plasmid pUC119 vector. [Result] The gene sequence of BAG vector lost control function of single copy number in new plasmid pUC119-BAC and was copied through High-copy form. The gene sequence of BAC vector basic function was completely cutted off through single enzyme digestion and the control function of single copy could be recovered by auto-connection. [ Conclusion ] The High-copy pUC119-BAC plasmid was used to copy and amplify high copy of basic function gene sequence in BAG vector, besides thai it could be used to construct transfer vector of molecular cloned recombinant virus or BAC library. 相似文献
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目的:构建贵州白香猪LPL基因与增强型绿色荧光蛋白基因的融合表达载体pEGFP-N3-LPL,转染Vero细胞,观察重组质粒的表达.方法:采用HindⅢ和BamHⅠ两种限制性内切酶获得LPL基因编码区片段和pEGFP-N3线型载体,将目的片段与该载体连接、转化、挑取阳性克隆,进行菌落PCR、双酶切及测序鉴定.使用Lipofectamine2000将重组质粒转染Vero细胞,观察细胞中绿色荧光蛋白的表达并对其进行mRNA检测.结果:成功构建重组真核表达载体pEGFP-N3-LPL,经mRNA检测,实验组在1 500bp处出现特异性条带,说明重组载体已在Vero细胞中获得表达.结论:本试验构建的真核细胞表达载体pEGFP-N3-LPL,为进一步阐明LPL基因与肌内脂肪沉积间的生物学作用机制奠定了基础. 相似文献