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    • 6. 发明公开
    • ALLELE-SPECIFIC AMPLIFICATION OF NUCLEIC ACIDS USING BLOCKING OLIGONUCLEOTIDES FOR WILD TYPE SUPPRESSION
    • 使用阻断寡核苷酸进行野生型抑制的核酸特异性扩增
    • EP3234180A1
    • 2017-10-25
    • EP15808657.9
    • 2015-12-15
    • Roche Diagnostics GmbHF. Hoffmann-La Roche AG
    • WILL, Stephen G.
    • C12Q1/68
    • C12Q1/6858C12Q1/6806C12Q2525/117C12Q2527/107C12Q2537/159C12Q2537/163
    • A method is provided for allele-specific amplification, utilizing a blocking oligonucleotide including at least one nucleotide with a base covalently modified at the exocyclic amino group, the blocking oligonucleotide being perfectly complementary to a wild type (WT) sequence when hybridized forming a first complex having a first melting temperature (Tm), the blocking oligonucleotide being partially non-complementary, at one or more nucleotides, to a target mutant (MT) sequence when hybridized forming a second complex having a second melting temperature (Tm), wherein the first Tm is higher than the second Tm and having at least one nucleotide with a base covalently modified at the exocyclic amino group, wherein the blocking oligonucleotide becomes unhybridized from the target MT sequence during amplification but remains hybridized with the WT sequence inhibiting amplification of the WT sequence utilizing a polymerase lacking 5′-3′ nuclease activity.
    • 提供了用于等位基因特异性扩增的方法,所述方法利用包含至少一个核苷酸的封闭寡核苷酸以及在环外氨基处共价修饰的碱基,当杂交形成第一复合物时,封闭寡核苷酸与野生型(WT)序列完全互补 具有第一解链温度(Tm),当形成具有第二解链温度(Tm)的第二复合物时,所述阻断寡核苷酸在一个或多个核苷酸处与靶突变体(MT)序列部分非互补,其中所述第一解链温度 Tm高于第二Tm且具有至少一个核苷酸,所述核苷酸在环外氨基处共价修饰的碱基,其中所述阻断寡核苷酸在扩增过程中与靶MT序列未杂交,但仍与抑制WT序列扩增的WT序列杂交 利用缺乏5'-3'核酸酶活性的聚合酶。
    • 9. 发明公开
    • METHOD FOR MODIFYING NUCLEIC ACIDS
    • 修饰核酸的方法
    • EP3187598A1
    • 2017-07-05
    • EP17155621.0
    • 2012-01-20
    • Takara Bio Inc.
    • Yamamoto, JunkoKubo, KeikoUemori, TakashiMukai, HiroyukiAsada, Kiyozo
    • C12Q1/68C12N15/09
    • C12N15/01C12Q1/6848C12Q1/686C12Q1/689C12Q2523/101C12Q2525/117
    • The present invention pertains to: a method for modifying a nucleic acid contained in a sample, said method including a step for bringing the sample into contact with a nucleic acid-modifying agent in the presence of an acidic polysaccharide and/or a nucleotide; and a method for selectively detecting a nucleic acid derived from living cells contained in the sample, said method including the following steps: (a) a step for modifying a nucleic acid contained in a sample according to the method for modifying a nucleic acid contained in a sample, which includes a step for bringing the sample into contact with a nucleic acid-modifying agent in the presence of an acidic polysaccharide and/or a nucleotide; and (b) a step for selectively detecting an unmodified nucleic acid from the sample after step (a). The present invention further pertains to a kit and composition for use in these methods.
    • 本发明涉及修饰样品中所含核酸的方法,所述方法包括在酸性多糖和/或核苷酸存在下使样品与核酸修饰剂接触的步骤; 所述方法包括以下步骤:(a)根据用于修饰包含在所述样品中的核酸的方法对样品中包含的核酸进行修饰的步骤; 样品,其包括在酸性多糖和/或核苷酸存在下使样品与核酸修饰剂接触的步骤; 和(b)在步骤(a)之后选择性检测来自样品的未修饰核酸的步骤。 本发明还涉及用于这些方法的试剂盒和组合物。