Synthesis and hybridization properties of oligonucleotide–perylene conjugates: influence of the conjugation parameters on triplex and duplex stabilities
作者:Yves Aubert、Ulysse Asseline
DOI:10.1039/b410695d
日期:——
involving either one or two perylenes attached via a longer polymethylene chain to either the 5'- or 3'- (or both the 5'-and 3'-) terminal phosphate groups. The ODNs involving two perylenes are more efficient at stabilizing the triplex and the duplex structures than the ODNs involving only one perylene and, among these, the ODN-perylene conjugate involving two sugar-perylene units attached at both
我们在这里报告与per结合的寡聚2'-脱氧核糖核苷酸(ODNs)的合成。将per直接或通过丙基连接基偶联至2'-脱氧核糖残基的端基位置,引入per诱导形成两个端基异构体。这些糖-ylene单元的每个纯的异头物的单掺入是在嘧啶的十五烷中的5'-末端或内部位置进行的。通过吸收光谱研究了这些修饰的ODN与它们的单链和双链DNA靶的结合特性。在5'-末端和内部位置(或5'-和5'-末端)都进行了最有效地稳定三链和双链结构(涉及丙基连接基的β-端基异构体)的糖-ylene单元的两次掺入。 3' -ends)。已经与ODN-per共轭物进行了比较,所述ODN-per共轭物涉及通过较长的多亚甲基链连接至5'-或3'-(或5'-和3'-)的一个或两个per基。与仅包含一个per的ODN相比,包含两个per的ODN在稳定三链体和双链体结构方面更有效,其中,在两个末端均连接有两个糖-ylene单元的ODN-p