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首页> 外文期刊>Chemistry: A European journal >New cyanine-oligonucleotide conjugates: Relationships between chemical structures and properties
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New cyanine-oligonucleotide conjugates: Relationships between chemical structures and properties

机译：新的花青-寡核苷酸共轭物：化学结构和性质之间的关系

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摘要

Because the influence of the chemical structure of monomethine cyanine-oligo-2'-deoxyribonucleotide (ODN) conjugates on their binding and fluorescence properties has remained largely undetermined, we synthesized and studied a wide range of conjugates with various structural patterns. Different cyanine dyes such as thiocyanine, quinocyanine, and thiazole orange isomers were obtained. In the case of unsymmetrical cyanines, the linker was attached to either the quinoline or the benzothiazole nucleus. The influence of the ODN counterpart was evaluated by linking the cyanines to the 5'-end or to an internucleotidic phosphate. In the first case, the influence of neighboring nucleic bases was studied, whereas in the second, the stereochemical configuration at the phosphorus atom bearing the cyanine was investigated. We report here on relationships between the structures of the dyes and conjugates and some of their properties, such as the stability and fluorescence changes observed on their hybridization with the target sequence. This study provides useful information towards the design of ODN-cyanine conjugates.
机译：由于单甲胺花菁-寡核苷酸2'-脱氧核糖核苷酸（ODN）共轭物的化学结构对其结合和荧光性质的影响尚未确定，因此我们合成并研究了多种具有各种结构模式的共轭物。获得了不同的花青染料，例如硫氰酸，喹啉和噻唑橙的异构体。对于不对称花青，连接子连接到喹啉或苯并噻唑核上。 ODN对应物的影响通过将花青素连接到5'末端或核苷酸间磷酸进行评估。在第一种情况下，研究了相邻核酸碱基的影响，而在第二种情况下，研究了带有花青的磷原子处的立体化学构型。我们在这里报告染料和缀合物的结构及其某些特性之间的关系，例如在与目标序列杂交时观察到的稳定性和荧光变化。这项研究为ODN-花青共轭物的设计提供了有用的信息。

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