The invention relates to iRNA agents, which preferably include a monomer in which the ribose moiety has been replaced by a moiety other than ribose. The inclusion of such a monomer can allow for modulation of a property of the iRNA agent into which it is incorporated, e.g., by using the non-ribose moiety as a point to which a ligand or other entity, e.g., a lipophilic moiety. e.g., cholesterol, is is directly, or indirectly, tethered. The invention also relates to methods of making and using such modified iRNA agents.
                            本发明涉及iRNA药剂,其中最好包括一个单体,其中
核糖基团已被除
核糖外的其他基团所替代。包含这样的单体可以允许调节iRNA药剂的某个性质,例如,通过使用非
核糖基团作为
配体或其他实体的点,例如,一个亲脂性基团,例如
胆固醇,直接或间接地被系在上面。本发明还涉及制备和使用这样的修饰iRNA药剂的方法。