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    • 64. 发明授权
    • iRNA agents with biocleavable tethers
    • 具有生物可清除系绳的iRNA试剂
    • US08426377B2
    • 2013-04-23
    • US12724267
    • 2010-03-15
    • Muthiah ManoharanKallanthottathil G. Rajeev
    • Muthiah ManoharanKallanthottathil G. Rajeev
    • A61K31/70C07H21/04C07H5/06
    • C12N15/113C12N15/111C12N2310/14C12N2310/323C12N2310/3511C12N2320/51
    • The invention relates to iRNA agents, which preferably include a monomer in which the ribose moiety has been replaced by a moiety other than ribose that further includes a tether having one or more linking groups, in which at least one of the linking groups is a cleavable linking group. The tether in turn can be connected to a selected moiety, e.g., a ligand, e.g., a targeting or delivery moiety, or a moiety which alters a physical property. The cleavable linking group is one which is sufficiently stable outside the cell such that it allows targeting of a therapeutically beneficial amount of an iRNA agent (e.g., a single stranded or double stranded iRNA agent), coupled by way of the cleavable linking group to a targeting agent—to targets cells, but which upon entry into a target cell is cleaved to release the iRNA agent from the targeting agent.
    • 本发明涉及iRNA试剂,其优选包括其中核糖部分已被核糖替代的单体,其进一步包括具有一个或多个连接基团的系链,其中至少一个连接基团是可切割的 连接组。 系链又可以连接到所选择的部分,例如配体,例如靶向或递送部分,或改变物理性质的部分。 可切割连接基团是在细胞外部足够稳定的连接基团,使得其允许靶向治疗有益量的iRNA试剂(例如,单链或双链iRNA试剂),其通过可切割连接基团连接至 靶向细胞靶向细胞,但是在进入靶细胞时被切割以从靶向剂释放iRNA试剂。
    • 66. 发明授权
    • Oligonucleotides comprising a non-phosphate backbone linkage
    • 包含非磷酸骨架键的寡核苷酸
    • US08013136B2
    • 2011-09-06
    • US12496268
    • 2009-07-01
    • Muthiah ManoharanKallanthottathil G. Rajeev
    • Muthiah ManoharanKallanthottathil G. Rajeev
    • C07H21/02C07H21/04
    • C12N15/111C07H19/04C07H19/12C07H19/16C07H19/167C07H19/173C07H21/02C12N15/1136C12N15/1137C12N2310/14C12N2310/312C12N2320/51
    • One aspect of the present invention relates to a ribonucleoside substituted with a phosphonamidite group at the 3′-position. In certain embodiments, the phosphonamidite is an alkyl phosphonamidite. Another aspect of the present invention relates to a double-stranded oligonucleotide comprising at least one non-phosphate linkage. Representative non-phosphate linkages include phosphonate, hydroxylamine, hydroxylhydrazinyl, amide, and carbamate linkages. In certain embodiments, the non-phosphate linkage is a phosphonate linkage. In certain embodiments, a non-phosphate linkage occurs in only one strand. In certain embodiments, a non-phosphate linkage occurs in both strands. In certain embodiments, a ligand is bound to one of the oligonucleotide strands comprising the double-stranded oligonucleotide. In certain embodiments, a ligand is bound to both of the oligonucleotide strands comprising the double-stranded oligonucleotide. In certain embodiments, the oligonucleotide strands comprise at least one modified sugar moiety. Another aspect of the present invention relates to a single-stranded oligonucleotide comprising at least one non-phosphate linkage. Representative non-phosphate linkages include phosphonate, hydroxylamine, hydroxylhydrazinyl, amide, and carbamate linkages. In certain embodiments, the non-phosphate linkage is a phosphonate linkage. In certain embodiments, a ligand is bound to the oligonucleotide strand. In certain embodiments, the oligonucleotide comprises at least one modified sugar moiety.
    • 本发明的一个方面涉及在3'-位被亚磷酰胺基取代的核糖核苷。 在某些实施方案中,亚磷酰胺是烷基亚磷酰胺。 本发明的另一方面涉及包含至少一种非磷酸键的双链寡核苷酸。 代表性的非磷酸酯键包括膦酸酯,羟胺,羟基肼基,酰胺和氨基甲酸酯键。 在某些实施方案中,非磷酸酯键是膦酸酯键。 在某些实施方案中,非磷酸酯键仅出现在一条链中。 在某些实施方案中,在两条链中都发生非磷酸连接。 在某些实施方案中,配体与包含双链寡核苷酸的寡核苷酸链之一结合。 在某些实施方案中,配体与包含双链寡核苷酸的两条寡核苷酸链结合。 在某些实施方案中,寡核苷酸链包含至少一个修饰的糖部分。 本发明的另一方面涉及包含至少一种非磷酸键的单链寡核苷酸。 代表性的非磷酸酯键包括膦酸酯,羟胺,羟基肼基,酰胺和氨基甲酸酯键。 在某些实施方案中,非磷酸酯键是膦酸酯键。 在某些实施方案中,配体与寡核苷酸链结合。 在某些实施方案中,寡核苷酸包含至少一个修饰的糖部分。