gene function and has been used for gene silencing by knocking down mRNA. Chemically modified RNAs, especially 2'-O-modification, successfully improved their physicochemical and pharmaceutical properties such as stability, nuclease resistance and delivery. Here, we report the synthesis of adenosine building blocks with different 2'-tethered modifications like aminoethyl and guanidinoethyl and show that
RNA干扰已被认为是控制
基因功能的强大工具,并已通过敲低mRNA用于
基因沉默。
化学修饰的RNA,尤其是2'-O-修饰,成功地改善了其理化和药学特性,例如稳定性,
核酸酶抗性和递送。在这里,我们报告合成具有不同2'链修饰的
氨基乙基和
胍基乙基的
腺苷结构单元,并表明它们与RNAi功能兼容。它们延长了血清中siRNA的半衰期,表明这些修饰可以增强siRNA在体内的药代动力学特性并降低其活性。