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    • 36. 发明授权
    • Unsymmetrical cyanine dimer compounds and their application
    • 不对称花青二聚体化合物及其应用
    • US07888136B2
    • 2011-02-15
    • US12099020
    • 2008-04-07
    • Stephen YueChing-Ying Cheung
    • Stephen YueChing-Ying Cheung
    • G01N33/53B01L3/00C12Q1/68C07H19/04
    • C12Q1/6816Y10S436/80C12Q2563/173
    • Embodiments of the present invention provide methods and nucleic acid reporter molecules for the detection of nucleic acid in a sample. The nucleic acid reporter molecule comprises two unsymmetrical cyanine monomer moieties, which may be the same or different, that are covalently attached by a linker comprising at least one aromatic, heteroaromatic, cyclic or heterocyclic moiety comprising 3-20 non-hydrogen atoms selected from the group consisting of O, N, S, P and C. The linker may be rigid, relatively flexible or some degree thereof. The unsymmetrical cyanine monomer moieties comprise a substituted or unsubstituted benzazolium moiety and a substituted or unsubstituted pyridinium or quinolinium moiety that is connected by a methine bridge that is monomethine, trimethine or pentamethine. The linkers form the cyanine dimer compounds by attaching to the pyridinium or quinolinium moiety of the monomer moieties. The present nucleic acid reporter molecules find utility in forming a nucleic acid-reporter molecule complex and detecting the nucleic acid. In particular, present nucleic acid reporter molecules with a rigid linker and monomer moieties with a monomethine bridge find utility in detecting RNA in the presence of DNA.
    • 本发明的实施方案提供了用于检测样品中核酸的方法和核酸报告分子。 核酸报告分子包含两个不对称的花青单体部分,其可以相同或不同,其通过包含至少一个芳族,杂芳族,环状或杂环部分的连接体共价连接,该部分包含3-20个非氢原子,所述非氢原子选自 由O,N,S,P和C组成的组。接头可以是刚性的,相对柔性的或其某种程度的。 不对称花青单体部分包含取代或未取代的苯并唑鎓部分和通过单甲基,三甲基或五甲氧基的次甲基桥连接的取代或未取代的吡啶鎓或喹啉鎓部分。 连接体通过连接到单体部分的吡啶鎓或喹啉鎓部分而形成花青二聚体化合物。 本发明的核酸报告分子可用于形成核酸 - 报道分子复合物并检测核酸。 特别地,具有刚性连接体和具有单甲基桥的单体部分的本发明的核酸报告分子在DNA存在下可用于检测RNA。