Department of Pharmacology, UT Southwestern Medical Center at Dallas, Dallas, 6001 Forest Park Road, TX 75390, USA.
Bioorg Med Chem Lett. 2009 Nov 1;19(21):6181-4. doi: 10.1016/j.bmcl.2009.09.004. Epub 2009 Sep 6.
Peptide nucleic acid (PNA) is a successful DNA/RNA mimic. A major challenge for research is to invent chemically modified PNAs that retain the favorable properties of the parent compound while improving biological recognition. Here, we test modified PNAs containing [bis-o-(aminoethoxy)phenyl]pyrrolocytosine bases designed to engage guanine with an additional hydrogen bond. We observe elevated melting temperatures, localization to cellular compartments, and allele-selective inhibition of mutant huntingtin protein expression.
肽核酸(PNA)是一种成功的 DNA/RNA 模拟物。研究的一个主要挑战是发明化学修饰的 PNA,使其保留母体化合物的有利性质,同时改善生物识别。在这里,我们测试了含有[双-o-(氨乙氧基)苯基]吡咯胞嘧啶碱基的修饰 PNA,这些碱基旨在与额外的氢键结合鸟嘌呤。我们观察到了升高的熔点、细胞区室定位和等位基因选择性抑制突变亨廷顿蛋白表达。