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    • 10. 发明授权
    • Method, system and reagents for DNA sequencing
    • 用于DNA测序的方法,系统和试剂
    • US5242796A
    • 1993-09-07
    • US780346
    • 1991-10-22
    • James M. ProberRudy J. DamCharles W. Robertson, JrFrank W. Hobbs, Jr.George L. Trainor
    • James M. ProberRudy J. DamCharles W. Robertson, JrFrank W. Hobbs, Jr.George L. Trainor
    • C07D405/04C07D405/12C07D405/14C07D471/04C07F9/6512C07F9/6558C07F9/6561C07H19/06C07H19/10C07H19/20C07H21/00C12Q1/68G01N27/447
    • C07D405/04C07D405/12C07D405/14C07D471/04C07F9/65121C07F9/65586C07F9/6561C07H19/06C07H19/10C07H19/20C07H21/00C12Q1/6869G01N27/44721G01N27/44726
    • A DNA sequencing system and method are described to detect the presence of radiant energy emitted from different excited reporter dye-labeled species (DNA fragments) following separation in time and/or space, and the identity of the species which emit radiant energy closely spaced in wavelength. Functions of the emitted energy are obtained which vary over the wavelengths of the closely spaced spectra in different senses and the functions ratioed, whereby the ratio is indicative of the identity of the DNA fragments.The emitting portion of the reporter-labeled DNA fragment is preferably one of a family of fluorescent dyes based on 9-carboxyethyl-6-hydroxy-3-oxo-3 H-xanthene. These xanthene dyes are covalently attached to the DNA fragments through the carboxylic acid functionality, preferably via an amide linkage. The dyes may be protected by including an alkoxy group at the 9-position. A spacer may be inserted between the dye and the amine. The fluorescent dye preferably is attached to the DNA chain terminators and provides many advantages. Thus only DNA sequencing fragments resulting from bona fide termination events will carry a reporter. The DNA sequencing may also be labeled using the xanthene dyes which have general utility as fluorescent labels. Also acyclonucleoside triphosphates are described as being useful as chain terminators in DNA sequencing using a modification of the Sanger method.
    • 描述了DNA测序系统和方法以检测在时间和/或空间分离之后从不同激发的报道染料标记物种(DNA片段)发射的辐射能的存在,以及发射辐射能的物质的身份 波长。 获得发射能量的功能,其在不同感官中的紧密间隔的光谱的波长上变化,并且功能的比例,其中该比率指示DNA片段的身份。 报道分子标记的DNA片段的发射部分优选为基于9-羧基乙基-6-羟基-3-氧代-3H-呫吨的荧光染料族之一。 这些呫吨染料通过羧酸官能团共价连接到DNA片段上,优选通过酰胺键连接。 可以通过在9位包括烷氧基来保护染料。 可以在染料和胺之间插入间隔物。 荧光染料优选连接到DNA链终止剂上并提供许多优点。 因此,只有真正终止事件导致的DNA测序片段才会携带记者。 DNA测序也可以使用具有通用作为荧光标记的呫吨染料进行标记。 也称为二环磷酸核苷三磷酸可用作DNA测序中的连锁终止子,使用Sanger方法的修饰。