Gubler-Hoffman法的cDNA文库构建试剂盒!TaKaRa cDNA Library Construction Kit

13 Jul 2007
Meng Ye
Student / Graduate

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利用真核生物的各种组织或细胞中的Poly(A)+ RNA合成cDNA,然后进行基因克隆,这在分子生物学实验中被广泛应用。这一技术的使用,使基因的结构解析及目的蛋白的表达等变得更为方便,
一般合成cDNA以及构建cDNA Library的方法为:
① 合成与目的Poly(A)+ RNA相互补的双链cDNA;
② 将双链cDNA与细菌或病毒来源的载体进行重组;
③ 将重组体导入细菌或真核细胞内进行扩增, 构建cDNALibrary。构建成的cDNA Library可以用于cDNA的解析,或者进一步进行体外转录或体外翻译等。
本试剂盒是以动植物由来的Poly(A)+ RNA为模板合成双链cDNA后,将双链cDNA与Plasmid Vector进行重组,构建质粒cDNA Library的试剂盒。试剂盒中使用的载体pAP3neo含有SV40启动子,可以在哺乳动物细胞内进行表达。
本试剂盒原理采用了Gubler-Hoffman法(Linker Primer法),是一种可以控制克隆基因方向性的Directional Cloning法,
1)利用反转录酶M-MLV和Oligo(dT)18 Anchor Primer合成1st Strand cDNA。1st Strand cDNA合成时使用5-
methyl dCTP。
2)E.coli RNase H使mRNA-1st Strand cDNA杂合体中的RNA形成Nick,再使用E.coli DNA Ploymerase和E.coli DNA Ligase将RNA链置换成DNA链,合成2nd Strand cDNA。
3)使用T4 DNA Polymerase将双链cDNA末端平滑化。
4)与Adaptor连接后,使用Not I进行酶切。
5)使用Spin Column除去短链cDNA。
6)与Vector pAP3neo进行连接(Directional Cloning)。
7)利用电刺激转化法导入大肠杆菌。
8)确认克隆效率及插入片段大小等。

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Genome AnalysisGenomics, the study of genomes, includes functional genomics, evolutionary genomics and comparative genomics. There are many genomic technologies such as DNA sequencing of whole genomes, computational biology and bioinformatics. DNA and nucleic acids must be isolated and concentrated from cells for analysis with kits, automated analyzers and software. Other useful technologies for studying genomics include PCR, microarrays and electrophoresis.Blood TransfusionBlood Transfusion involves giving donor blood to a recipient patient. Screening is essential to avoid transfusion reactions. Blood banks use immunohematological techniques to determine rh and ABO blood group, and screen for antibodies using specific antisera. Blood Banks use Direct Coombs Tests (DCT) and Indirect Coombs Tests (IAT) to detect hemolysis and Haemolytic Disease of the Newborn (HDN).DNA / RNA Extraction and PurificationPurified DNA and RNA are required for numerous downstream molecular biology applications. Consequently, the importance of high-quality DNA/RNA extraction and purification equipment cannot be underestimated. Many purification kits are available and are typically optimized for nucleic acid type and source, including plasmid DNA, genomic DNA, mRNA, RNA and viral nucleic acid purification kits. Automated extraction and purification of nucleic acids can be implemented with magnetic bead separator instruments or high-throughput purification workstations. Find the best DNA/RNA extraction and purification equipment in our peer-reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.Gene Expression and Molecular CloningMolecular cloning is a set of techniques that utilizes vectors to transfer recombinant DNA into host cells and is an essential tool for investigating the expression of genes and proteins in bacterial or mammalian cells. A variety of vectors optimized for gene cloning and expression in a range of host organisms are available, alongside competent cells for genetic replication. Here, you can explore a range of molecular tools, high-quality genomic and cDNA libraries, premade clones, transformation and transfection reagents and mutagenesis or gene expression detection assays and expression arrays. Find the best gene expression and molecular cloning products in our peer-reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.
Gubler-Hoffman法的cDNA文库构建试剂盒!TaKaRa cDNA Library Construction Kit