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    • 4. 发明公开
    • Nucleid acid ligand diagnostic biochip
    • Diagnosebiochip mitNukleinsäureliganden
    • EP2280083A1
    • 2011-02-02
    • EP10176907.3
    • 1998-12-14
    • Somalogic, Inc.
    • Gold, LarryDrolet, DanielZichi, Dominic, A.Jayasena, SumedhaCreighton, SteveGill, Stanley
    • C12Q1/68C12P19/34C07H21/04G01N33/543
    • C12Q1/6839C07B2200/11C12Q1/6834C12Q1/6837C40B40/00Y10S977/924C12Q2565/514C12Q2565/101C12Q2541/101C12Q2525/205
    • A nucleic acid ligand "biochip" is disclosed, consisting of a solid support to which one or more specific nucleic acid ligands is attached in a spatially defined manner. Each nucleic acid ligand binds specifically and avidly to a particular target molecule contained within a test mixture, such as a bodily fluid. The target molecules include, but are not limited to, proteins (cellular, viral, bacterial, etc.) hormones, sugars, metabolic byproducts, cofactor, and intermediates, drugs, and toxins. Contacting the test mixture with the biochip leads to the binding of a target molecule to its cognate nucleic acid ligand. Binding of target to the nucleic acid ligand results in a detectable change at each specific location on the biochip. The detectable change can include, but is not limited to, a change in fluorescence, or a change in a physical parameter, such as electrical conductance or refractive index, at each location on the biochip. The biochip will then be read by a device, such as a fluorescence scanner or a surface plasmon resonance detector, that can measure the magnitude of the change at each location on the biochip. The location of the change reveals what target molecule has been detected, and the magnitude of the change indicates how much of it is present. The combination of these two pieces of information will yield diagnostic and prognostic medical information when signal patterns are compared with those obtained from bodily fluids of individuals with diagnosed disorders. In principle, the biochip could be used to test any chemically complex mixture provided that nucleic acid ligands to components suspected of being present in the mixture are attached to the biochip. Thus, the nucleic acid ligand biochip will have a wider use in environmental testing, etc.
    • 公开了一种核酸配体“生物芯片”,其由以空间限定的方式连接一个或多个特定核酸配体的固体支持物组成。 每个核酸配体特异性地并且亲和地结合到测试混合物(例如体液)中所含的特定靶分子。 靶分子包括但不限于蛋白质(细胞,病毒,细菌等)激素,糖,代谢副产物,辅因子和中间体,药物和毒素。 将测试混合物与生物芯片接触导致靶分子与其同源核酸配体的结合。 靶向核酸配体的结合导致生物芯片上每个特定位置的可检测变化。 可检测的变化可以包括但不限于在生物芯片上的每个位置的荧光的变化或物理参数的变化,例如电导率或折射率。 然后生物芯片将被诸如荧光扫描仪或表面等离子体共振检测器的装置读取,该装置可以测量生物芯片上每个位置处的变化幅度。 变化的位置揭示了目标分子被检测到的,而变化的大小表明它有多少存在。 当将信号模式与从具有诊断的病症的个体的体液获得的信号模式进行比较时,这两个信息的组合将产生诊断和预后的医学信息。 原则上,如果怀疑存在于混合物中的组分的核酸配体连接到生物芯片上,则生物芯片可用于测试任何化学复合物混合物。 因此,核酸配体生物芯片将在环境测试等方面有更广泛的应用。