Nuclease resistant chimeric oligonucleotides

C - Chemistry – Metallurgy – 07 – H

Patent

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Details

C07H 21/00 (2006.01) A61K 31/7088 (2006.01) A61K 48/00 (2006.01) C12Q 1/44 (2006.01)

Patent

CA 2452458

The present invention relates to novel nuclease-resistant oligomeric compounds and to novel methods for increasing resistance of oligomeric compounds. In preferred embodiments of the invention, the oligomeric compounds comprise at least one modified nucleoside containing a modified sugar moiety at either the 3' or 5' terminus of the oligomeric compound, and further comprise at least one internucleoside linking group that is other than phosphodiester. Other preferred embodiments of the invention include methods of enhancing the nuclease resistance of oligomeric compounds comprising incorporating at least one modified nucleoside containing a modified sugar moiety at either the 3' or 5' terminus of an oligomeric compound.

L'invention concerne de nouveaux composés oligomères résistants à la nucléase, et de nouveaux procédés permettant d'accroître la résistance des composés oligomères. Dans les modes de réalisation préférés, ces composés oligomères comprennent au moins un nucléoside modifié contenant une fraction sucre modifiée au niveau de l'extrémité 3' ou 5' du composé oligomère, ainsi qu'au moins un groupe de liaison internucléosides autre que le phosphodiester. D'autres formes de réalisation préférées comprennent des procédés permettant d'augmenter la résistance à la nucléase des composés oligomères, consistant à incorporer au moins un nucléoside modifié contenant une fraction sucre modifié dans l'extrémité 3' ou 5' d'un composé oligomère.

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