Synthesis of nuclease-resistant siRNAs possessing benzene-phosphate backbones in their 3′-overhang regions
作者:Yoshihito Ueno、Takumi Inoue、Mahito Yoshida、Kayo Yoshikawa、Aya Shibata、Yoshiaki Kitamura、Yukio Kitade
DOI:10.1016/j.bmcl.2008.08.086
日期:2008.10
experiment using HeLa cells system. Furthermore, the RNA possessing b(t) at its 3'-end was more resistant to nucleolytic hydrolysis by snake venom phosphodiesterase (a 3'-exonuclease) than the RNA possessing the natural nucleoside 2'-deoxythymidine at the 3'-end. Thus, the compound b(t) will be a novel 3'-overhang moiety that can enhance the silencing activity and nuclease-resistant property of siRNAs.
我们描述了在其3'-突出端区域具有N(1)-[3,5-双(羟甲基)苯基]胸腺嘧啶(b(t))的siRNA的合成和沉默活性。我们发现,在3'-突出区域具有b(t)的siRNA比具有天然核苷的siRNA和具有1,3-双(羟甲基)苯(b)且在3'-没有核碱基的siRNA更有效。 HeLa细胞系统进行的体外实验中的突出端区域。此外,在其3'端具有b(t)的RNA比在3'端具有天然核苷2'-脱氧胸苷的RNA更耐蛇毒磷酸二酯酶(3'-核酸外切酶)的核酸水解。因此,化合物b(t)将是一个新的3'-突出部分,可以增强siRNA的沉默活性和核酸酶抗性。