Disclosed are polynucleotide constructs having a strand linked to a moiety carrying one or more auxiliary moieties. Also disclosed are polynucleotide constructs interrupted with a sugar analogue, and polynucleotide constructs with stereochemical^ enriched phosphorothioates. The polynucleotide constructs may be provided as hybridized polynucleotide constructs. Also featured are methods of delivery a polynucleotide construct to a cell and methods of reducing the expression of a protein in a cell by contacting the cell with the disclosed polynucleotide construct or hybridized polynucleotide construct.
揭示了具有与携带一个或多个辅助基团的基团相连的多核苷酸构造。还披露了被
糖类似物中断的多核苷酸构造,以及具有立体
化学富集的
磷酸硫酸酯的多核苷酸构造。这些多核苷酸构造可以作为杂交多核苷酸构造提供。还包括将多核苷酸构造传递给细胞的方法,以及通过将细胞与披露的多核苷酸构造或杂交多核苷酸构造接触来减少细胞中蛋白质表达的方法。