Upgrading SELEX technology by using lambda exonuclease digestion for single-stranded DNA generation.

Upgrading SELEX technology by using lambda exonuclease digestion for single-stranded DNA generation.
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DOI:
10.3390/molecules15010001
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发表时间:
2009-12-24
期刊:
Molecules (Basel, Switzerland)
影响因子:
--
通讯作者:
Wendel HP
Wendel HP
中科院分区:
其他
文献类型:
--
作者:
Avci-Adali M;Paul A;Wilhelm N;Ziemer G;Wendel HP

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单链DNA分子的产生在SELEX(Systematic Evolution of Ligands by Exponential Enrichment)组合化学过程和许多分子生物学技术和应用中起着关键作用,例如DNA测序、单核苷酸多态性(SNP)分析、DNA芯片、DNA单链构象多态性(SSCP)分析和许多其它技术。ssDNA的纯度和产量会影响每一次应用的成功。本研究比较了两种ssDNA生产方法,链亲和素包被的磁珠和碱变性和λ核酸外切酶消化的链分离,在所产生的ssDNA的纯度和效率方面。在这里,我们证明了相当大的好处,ssDNA生产的λ核酸外切酶消化在体外选择的DNA适体。我们相信,使用这种方法生成ssDNA适体将大大提高关于回收靶特异性适体的SELEX实验的成功率。
The generation of single-stranded DNA (ssDNA) molecules plays a key role in the SELEX (Systematic Evolution of Ligands by EXponential enrichment) combinatorial chemistry process and numerous molecular biology techniques and applications, such as DNA sequencing, single-nucleotide polymorphism (SNP) analysis, DNA chips, DNA single-strand conformation polymorphism (SSCP) analysis and many other techniques. The purity and yield of ssDNA can affect the success of each application. This study compares the two ssDNA production methods, the strand separation by streptavidin-coated magnetic beads and alkaline denaturation and the lambda exonuclease digestion, in regard to the purity of generated ssDNA and the efficiency. Here, we demonstrate the considerable benefits of ssDNA production by lambda exonuclease digestion for in vitro selection of DNA aptamers. We believe that the generation of ssDNA aptamers using this method will greatly improve the success rate of SELEX experiments concerning the recovery of target-specific aptamers.
DOI: 10.1073/pnas.85.20.7652
发表时间: 1988-10-01
影响因子: 11.1
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