本试验旨在制备用于小尾寒羊瘦素长型受体(leptin receptor long form)基因实时荧光定量PCR的标准品质粒和标准曲线。提取初情期前小尾寒羊下丘脑弓状核组织总RNA,进行反转录合成第1链cDNA,然后进行PCR和目的基因片段的回收;通过T-A克...本试验旨在制备用于小尾寒羊瘦素长型受体(leptin receptor long form)基因实时荧光定量PCR的标准品质粒和标准曲线。提取初情期前小尾寒羊下丘脑弓状核组织总RNA,进行反转录合成第1链cDNA,然后进行PCR和目的基因片段的回收;通过T-A克隆将该基因片段插入pMD18-T载体中,构建回收产物的重组质粒;大量提取质粒,定量后进行标准曲线的制作和实时荧光定量PCR。重组质粒经PCR扩增和测序,结果表明,瘦素长型受体基因已成功克隆。提示,所构建的瘦素长型受体基因实时荧光定量标准曲线线性关系好,灵敏度和特异性高,准确可靠,此方法可作为实时荧光定量PCR检测瘦素长型受体基因的标准方法。展开更多
Here we report the construction of sheep PrP gene standard plasmid DNA and curve using real-time RT-PCR.Total RNA was extracted from each sample and the fragments of target gene were amplified by RT-PCR.The plasmid wa...Here we report the construction of sheep PrP gene standard plasmid DNA and curve using real-time RT-PCR.Total RNA was extracted from each sample and the fragments of target gene were amplified by RT-PCR.The plasmid was constructed for calibrating unknown samples.In this study,the constructed plasmid containing only the target gene was used to construct a calibration curve.The absolute standard curve method was shown to be of high linearity,sensitivity and reproducibility.The purpose of this study is to investigate the quantification of PrP mRNA expression for knowing the scrapie pathogenesis and providing powerful tool for further studies on prion diseases pathogenesis.展开更多
利用SYBR Green I荧光定量PCR技术,建立鳜IgM-DNA定量标准品的制备方法。从浸泡免疫后的鳜头肾中提取总RNA逆转录合成cDNA,对目的片段进行PCR扩增、电泳纯化、T-A克隆及测序鉴定。将所得预期质粒梯度稀释后构建标准曲线并进行融解曲线...利用SYBR Green I荧光定量PCR技术,建立鳜IgM-DNA定量标准品的制备方法。从浸泡免疫后的鳜头肾中提取总RNA逆转录合成cDNA,对目的片段进行PCR扩增、电泳纯化、T-A克隆及测序鉴定。将所得预期质粒梯度稀释后构建标准曲线并进行融解曲线分析。结果表明,当标准品的浓度在3.29×102～3.29×108拷贝/μL时,模板浓度与循环阈值(Ct)间的线性关系良好,相关系数r2达到0.999;融解曲线分析显示具特异的单个峰,表明扩增产物特异性非常好。此法制备的重组质粒标准品可用于对鳜IgM基因的转录水平进行测定。展开更多
文摘本试验旨在制备用于小尾寒羊瘦素长型受体(leptin receptor long form)基因实时荧光定量PCR的标准品质粒和标准曲线。提取初情期前小尾寒羊下丘脑弓状核组织总RNA,进行反转录合成第1链cDNA,然后进行PCR和目的基因片段的回收;通过T-A克隆将该基因片段插入pMD18-T载体中,构建回收产物的重组质粒;大量提取质粒,定量后进行标准曲线的制作和实时荧光定量PCR。重组质粒经PCR扩增和测序,结果表明,瘦素长型受体基因已成功克隆。提示,所构建的瘦素长型受体基因实时荧光定量标准曲线线性关系好,灵敏度和特异性高,准确可靠,此方法可作为实时荧光定量PCR检测瘦素长型受体基因的标准方法。
文摘Here we report the construction of sheep PrP gene standard plasmid DNA and curve using real-time RT-PCR.Total RNA was extracted from each sample and the fragments of target gene were amplified by RT-PCR.The plasmid was constructed for calibrating unknown samples.In this study,the constructed plasmid containing only the target gene was used to construct a calibration curve.The absolute standard curve method was shown to be of high linearity,sensitivity and reproducibility.The purpose of this study is to investigate the quantification of PrP mRNA expression for knowing the scrapie pathogenesis and providing powerful tool for further studies on prion diseases pathogenesis.
文摘利用SYBR Green I荧光定量PCR技术,建立鳜IgM-DNA定量标准品的制备方法。从浸泡免疫后的鳜头肾中提取总RNA逆转录合成cDNA,对目的片段进行PCR扩增、电泳纯化、T-A克隆及测序鉴定。将所得预期质粒梯度稀释后构建标准曲线并进行融解曲线分析。结果表明,当标准品的浓度在3.29×102～3.29×108拷贝/μL时,模板浓度与循环阈值(Ct)间的线性关系良好,相关系数r2达到0.999;融解曲线分析显示具特异的单个峰,表明扩增产物特异性非常好。此法制备的重组质粒标准品可用于对鳜IgM基因的转录水平进行测定。
