[EN] 2'-MODIFIED NUCLEOSIDE BASED OLIGONUCLEOTIDE PRODRUGS<br/>[FR] PROMÉDICAMENTS OLIGONUCLÉOTIDIQUES À BASE DE NUCLÉOSIDES MODIFIÉS EN 2'
申请人:[en]ALNYLAM PHARMACEUTICALS, INC.
公开号:WO2022147223A2
公开(公告)日:2022-07-07
This invention relates to an oligonucleotide comprising one or more 2'-modified nucleosides, wherein the 2'-position of the nucleoside has a structure of formula (I). The invention also relates to a pharmaceutical composition comprising the oligonucleotide described herein and a method of reducing or inhibiting the expression of a target gene by administering to the subject a therapeutically effective amount of the oligonucleotide described herein. The invention also relates to a method of bioactivating an oligonucleotide comprising one or more 2'-modified nucleosides, wherein the 2'-position of the nucleoside is modified by a bio-cleavable linking group, wherein the bio-cleavable linking group comprises acetal, disulfide, carbamate, amide, sulfonamide, a biocleavable carbohydrate linker, or combinations thereof, said method comprising the step of: exposing the oligonucleotide to a physiological condition that causes the bio-cleavable linking group to be cleaved from the 2'-modified nucleoside, thereby regenerating the 2'-OH group of the nucleoside.