作者:Jharna Barman、Deepanjali Gurav、Oommen P. Oommen、Oommen P. Varghese
DOI:10.1039/c4ra14721a
日期:——
characterization of a new 2′-N-Guanidino,4′-C-ethylene bridged thymidine (GENA-T) modified oligonucleotide possessing North-locked sugar conformation. Incorporation of GENA-T nucleotide though did not change the thermal stability of the oligonucleotides toward the complementary RNA; it significantly increased the stability of the parallel triplex at pH 7. The melting temperature of the triplex was increased by
在这里,我们介绍一种新的2'- N -Guanidino,4'- C的合成和表征乙桥胸腺嘧啶核苷(GENA-T)修饰的寡核苷酸具有北锁糖构象。尽管掺入GENA-T核苷酸并没有改变寡核苷酸对互补RNA的热稳定性;它在pH 7时显着提高了平行三链体的稳定性。与等序未修饰序列相比,三链体的解链温度提高了+9.5°C。此外,这种修饰使寡核苷酸具有超过33小时的出色核酸酶稳定性。这项研究清楚地证明,GENA-T修饰的寡核苷酸可以改善三链体的形成,并具有惊人的酶稳定性,可用于各种生物医学应用。