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    • 6. 发明申请
    • METHODS AND COMPOSITIONS FOR AMPLIFYING DETECTABLE SIGNALS IN SPECIFIC BINDING ASSAYS
    • 用于在特定结合测定中扩增可检测信号的方法和组合物
    • WO0018962A9
    • 2000-08-24
    • PCT/US9922584
    • 1999-09-28
    • AFFYMETRIX INCGOLDBERG MARTIN JYELAGALAWADI GOVINDA RAO STANIMOTO EUGENE YUJITRAN HUU MINHDONG HELINLOCKHART DAVID JRYDER THOMAS BWARRINGTON JANET ABEECHER JODY
    • GOLDBERG MARTIN JYELAGALAWADI GOVINDA RAO STANIMOTO EUGENE YUJITRAN HUU MINHDONG HELINLOCKHART DAVID JRYDER THOMAS BWARRINGTON JANET ABEECHER JODY
    • C12N15/09C12Q1/68G01N37/00G01N33/58
    • C12Q1/682C12Q1/6804Y10S436/807C12Q2565/501C12Q2563/131C12Q2527/125C12Q2563/107C12Q2563/125C12Q2563/143C12Q2537/125
    • Methods and compounds are provided for detecting target molecules in a sample using specific binding assays. In particular, methods are provided for detecting a nucleic acid target in a sample. In one embodiment, the method comprises hybridizing a nucleic acid target, comprising a target nucleic acid sequence, to a nucleic acid probe, comprising a probe nucleic acid sequence, wherein the target comprises a binding ligand. The hybridized target is contacted with a receptor comprising multiple sites capable of binding the binding ligand to complex the receptor to the binding ligand, and the receptor is contacted with an amplification reagent, comprising a plurality of the binding ligands, to complex the amplification reagent to the receptor. The presence of the complexed amplification reagent then is detected, for example, by detecting the presence of a detectable label, such as a fluorescent label, for example, on the receptor or the amplification reagent. Optionally, the amplification reagent, comprising a plurality of the binding ligands, is contacted with labeled receptor molecules thereby to complex a plurality of labeled receptor molecules to the amplification reagent, and the labeled receptor molecules complexed to the amplification reagent are detected. This permits the detectable signal to be enhanced and amplified. In one embodiment, the binding ligand is biotin, the receptor is streptavidin, and the amplification reagent is an antibody or a DNA matrix. In another embodiment, an array of different nucleic acid probes immobilized on a surface, each having a defined sequence and location on the surface, may be used in the assays, thus permitting screening and detection of binding of large number of nucleic acids.
    • 提供了使用特异性结合测定法检测样品中的靶分子的方法和化合物。 具体而言,提供了用于检测样品中的核酸靶标的方法。 在一个实施方案中,所述方法包括使包含靶核酸序列的核酸靶与包含探针核酸序列的核酸探针杂交,其中所述靶包含结合配体。 使杂交的靶与包含能够结合结合配体的多个位点的受体接触以将受体与结合配体复合,并使受体与包含多个结合配体的扩增试剂接触以将扩增试剂复合成 受体。 然后检测复合的扩增试剂的存在,例如通过检测例如受体或扩增试剂上的可检测标记(例如荧光标记)的存在。 任选地,使包含多个结合配体的扩增试剂与标记的受体分子接触,从而将多个标记的受体分子与扩增试剂复合,并检测与扩增试剂复合的标记的受体分子。 这允许可检测信号被增强和放大。 在一个实施方案中,结合配体是生物素,受体是链霉抗生物素蛋白,扩增试剂是抗体或DNA基质。 在另一个实施方案中,固定在表面上的不同核酸探针的阵列,每个核酸探针在表面上都具有限定的序列和位置,可以用于测定中,从而允许筛选和检测大量核酸的结合。