Peptide nucleic acids conjugated to lipophilic groups and incorporated into liposomes exhibit enhanced cellular uptake and distribution. Cellular uptake and distribution of peptide nucleic acids also increases with the introduction of an amino acid side chain into the backbone of peptide nucleic acids. Methods of modulating cellular uptake and methods for treating animals are provided. The peptide nucleic acids of the invention comprise naturally-occurring nucleobases and non-naturally-occurring nucleobases attached to a polyamide backbone.
连接到亲脂基团的肽核酸并包含在脂质体中,表现出增强的细胞摄取和分布。引入
氨基酸侧链到肽核酸骨架中,也可以增加肽核酸的细胞摄取和分布。本发明提供了调节细胞摄取的方法和治疗动物的方法。本发明的肽核酸包括天然核苷酸和连接到聚酰胺骨架上的非天然核苷酸。