A novel 2′,4′-BNA/LNA analog bridged by guanidine, termed as guanidine bridged nucleic acid (GuNA), was synthesized and incorporated into oligonucleotides. Thermal stabilities and nuclease resistance of GuNA-modified oligonucleotides were investigated and compared with those of 2′,4′-BNA/LNA and natural DNA oligonucleotides. GuNA exhibited interestingly high binding affinity towards complementary ssDNA than 2′,4′-BNA/LNA.
研究人员合成了一种以
胍为桥的新型 2′,4′-BNA/LNA 类似物,称为
胍桥核酸(GuNA),并将其加入到寡核苷酸中。研究了 GuNA 修饰寡核苷酸的热稳定性和抗
核酸酶性,并与 2′,4′-BNA/LNA 和天然 DNA 寡核苷酸进行了比较。与 2′,4′-BNA/LNA 相比,GuNA 与互补 ssDNA 的结合亲和力更高。