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    • 7. 发明授权
    • Oligonucleotides having A-DNA form and B-DNA form conformational geometry
    • 具有A-DNA形式和B-DNA的寡核苷酸形成构象几何
    • US06737520B2
    • 2004-05-18
    • US10098816
    • 2002-03-15
    • Muthiah ManoharanVenkatraman Mohan
    • Muthiah ManoharanVenkatraman Mohan
    • C07H2102
    • C07H21/00
    • Modified oligonucleotides containing both A-form conformation geometry and B-from conformation geometry nucleotides are disclosed. The B-form geometry allows the oligonucleotide to serve as substrates for RNase H when bound to a target nucleic acid strand. The A-form geometry imparts properties to the oligonucleotide that modulate binding affinity and nuclease resistance. By utilizing C2′ endo sugars or O4′ endo sugars, the B-form characteristics are imparted to a portion of the oligonucleotide. The A-form characteristics are imparted via use of either 2′-O-modified nucleotides that have 3′ endo geometries or use of end caps having particular nuclease stability or by use of both of these in conjunction with each other.
    • 公开了含有A型构象几何形状和B-构象几何核苷酸的修饰寡核苷酸。 当结合到靶核酸链上时,B型几何允许寡核苷酸用作核糖核酸酶H的底物。 A型几何赋予调节结合亲和力和核酸酶抗性的寡核苷酸的性质。 通过使用C2'内糖或O4'内糖,B型特征被赋予寡核苷酸的一部分。 通过使用具有3'内部几何形状的2'-O-修饰的核苷酸或使用具有特定核酸酶稳定性的端帽或通过使用它们彼此结合来赋予A型特征。