MCSWIGGEN, JAMES,BEIGELMAN, LEONID,CHOWRIRA, BHARAT,PAVCO, PAMELA,FOSNAUGH, KATHY,JAMISON, SHARON,USMAN, NASSIM,THOMPSON, JAMES
申请号:
ES10008929
公开号:
ES2534045T3
申请日:
2003.02.20
申请国别(地区):
ES
年份:
2015
代理人:
摘要:
A chemically modified synthetic short interfering nucleic acid (ANIC) molecule capable of negatively regulating the expression of a target gene in cells by RNA interference (RNAi), wherein the ANIC comprises: (a) a sense strand and a antisense chain; (b) each strand of the nucleic acid molecule independently has a length of 18 to 24 nucleotides and the duplex of siNA comprises from 17 to 23 base pairs; (c) 5, 6, 7, 8, 9, 10 or more pyrimidine nucleotides of the sense strand and / or 5, 6, 7, 8, 9, 10 or more pyrimidine nucleotides of the antisense strand are chemically modified with nucleotides 2'-deoxy, 2'-O methyl and / or 2'-deoxy-2'-fluoro; and (d) one or more phosphorothioate internucleotide bonds and / or a terminal protection molecule at the 3 'end, the 5' end or at both 3 'and 5' ends, on the same chain or on a different chain being present of the siNA in which the siNA molecule comprises two separate oligonucleotide fragments, wherein one fragment comprises the sense region and a second fragment comprises the antisense region, and wherein the fragment comprising the sense region includes a moiety terminal protection at the 5 'end, the 3' end or both 5 'and 3' ends.Una molécula de ácido nucleico de interferencia corto (ANic) sintética modificada químicamente capaz de regular negativamente la expresión de un gen diana en células por interferencia de ARN (iARN), en la que el ANic comprende: (a) una cadena con sentido y una cadena antisentido; (b) cada cadena de la molécula de ácido nucleico tiene independientemente una longitud de 18 a 24 nucleótidos y el dúplex de ANic comprende de 17 a 23 pares de bases; (c) 5, 6, 7, 8, 9, 10 o más nucleótidos de pirimidina de la cadena con sentido y/o 5, 6, 7, 8, 9, 10 o más nucleótidos de pirimidina de la cadena antisentido se modifican químicamente con nucleótidos 2'-desoxi, 2'-O metilo y/o 2'-desoxi-2'-fluoro; y (d) estando presentes uno o más enlaces internucleotídicos de fosforotioato y/o una molécula de protección ter