4′-C-Trifluoromethyl modified oligodeoxynucleotides: synthesis, biochemical studies, and cellular uptake properties
作者:Yifei Zhou、Chuanlong Zang、Huawei Wang、Jiajun Li、Zenghui Cui、Qiang Li、Fengmin Guo、Zhiguo Yan、Xin Wen、Zhen Xi、Chuanzheng Zhou
DOI:10.1039/c9ob00765b
日期:——
Herein, we report the synthesis of 4'-C-trifluoromethyl (4'-CF3) thymidine (T4'-CF3) and its incorporation into oligodeoxynucleotides (ODNs) through solid-supported DNA synthesis. The 4'-CF3 modification leads to a marginal effect on the deoxyribose conformation and a local helical structure perturbation for ODN/RNA duplexes. This type of modification slightly decreases the thermal stability of ODN/RNA
在这里,我们报告4'-C-三氟甲基(4'-CF3)胸苷(T4'-CF3)的合成及其通过固相支持的DNA合成掺入寡脱氧核苷酸(ODNs)中。4'-CF3修饰对ODN / RNA双链体的脱氧核糖构象产生微不足道的影响,并对局部螺旋结构产生干扰。这类修饰会稍微降低ODN / RNA双链体的热稳定性(-1°C /修饰),并导致核酸酶抗性提高。像众所周知的硫代磷酸酯(PS)修饰一样,大量的4'-CF3修饰可以使细胞直接摄取修饰的ODN,而无需任何传递试剂。这项工作突显了4'-CF3修饰的ODN是有前景的基于反义疗法的候选药物,而反义药物将反过来