It is intended to provide a polynucleotide that is resistant to RNase and has an RNA interference effect, etc. The present invention provides a single-stranded polynucleotide that is derived from a double-stranded polynucleotide comprising a sense strand polynucleotide corresponding to a target gene, and an antisense strand polynucleotide having a nucleotide sequence complementary to the sense strand polynucleotide, and has a structure in which the 5′-end of the antisense strand and the 3′-end of the sense strand are linked via a phenyl group-containing linker to form a phosphodiester structure at each of these ends.
本发明旨在提供一种对RNase具有抗性并具有RNA干扰效应的多核苷酸。本发明提供了一种单链多核苷酸,其源自于包含与目标
基因相对应的正义链多核苷酸和具有与正义链多核苷酸互补的核苷酸序列的反义链多核苷酸的双链多核苷酸,且具有一种结构,其中反义链的5'-末端和正义链的3'-末端通过含苯基的连接剂连接形成
磷酸二酯结构。