Short-RNA selective binding of oligonucleotides modified using adenosine and guanosine derivatives that possess cyclohexylphosphates as substituents
作者:Kohji Seio、Sayako Kurohagi、Erika Kodama、Yoshiaki Masaki、Hirosuke Tsunoda、Akihiro Ohkubo、Mitsuo Sekine
DOI:10.1039/c1ob06580g
日期:——
short RNA targets from long ones. The modification of the 5′ termini of oligonucleotides by using adenosine derivatives that possess a bulky cyclohexyl phosphate moiety at their base moiety and a phosphate group at the position of their 5′-hydroxyl group maximized their short RNA selectivity. The 2′-O-methyl-RNA (5′-XCmAmAmCmCmUmAmCmUm) having these modifications exhibits ca. 10 °C higher Tm in the
我们开发了新的人工寡核苷酸,可将短RNA靶与长RNA靶区分开。通过使用具有庞大体积的腺苷衍生物修饰寡核苷酸的5'末端磷酸环己基酯 在其碱基部分上的部分和在其位置上的磷酸基团 5'-羟基小组最大程度地提高了其短RNA选择性。这2′- O-甲基-RNA (5′-XC m A m A m C m C m U m A m C m U m具有这些修饰的)约 高10°CŤ米 互补的短RNA(3'-GUUGGAUGA-5')的双链体比长RNA(3′-AUUAUAU UGGUUA-5'')。具有相同修饰的寡脱氧核苷酸表现出相似的选择性。末端修饰的寡核苷酸的这种短RNA选择性结合可用于区分成熟的microRNA和前microRNA。