The present peptide nucleic acids exhibit enhanced cellular uptake and distribution. The peptide nucleic acids of the invention comprise naturally-occurring nucleobases and non-naturally-occurring nucleobases attached to a polyamide backbone. Non-naturally-occurring bases include monocyclic, bi-cyclic, and tricyclic heterocycles. Modified backbones are also provided.
本发明的
多肽核酸具有更强的细胞吸收和分布能力。本发明的肽核酸包括连接到聚酰胺骨架上的天然存在的核碱基和非天然存在的核碱基。非天然存在的碱基包括单环、双环和
三环杂环。此外,还提供经修饰的骨架。