申请人:Aclara BioSciences, Inc.
公开号:US20020142329A1
公开(公告)日:2002-10-03
Probe sets for the multiplexed detection of the binding of, or interaction between, one or more ligands and target antiligands are provided. Detection involves the release of identifying tags as a consequence of target recognition. The probe sets include electrophoretic tag probes or e-tag probes, comprising a detection region and a mobility-defining region called the mobility modifier, both linked to a target-binding moiety. Target antiligands are contacted with a set of e-tag probes and the contacted antiligands are treated with a selected cleaving agent resulting in a mixture of e-tag reporters and uncleaved and/or partially cleaved e-tag probes. The mixture is exposed to a capture agent effective to bind to uncleaved or partially cleaved e-tag probes, followed by electrophoretic separation. In a multiplexed assay, different released e-tag reporters may be separated and detected providing for target identification. The methods employ compositions comprising luminescent molecules such as, for example, fluorescent molecules, which are modified to provide for electrophoretic properties that differ for each modified luminescent molecule while maintaining substantially the same absorption, emission and quantum yield properties of the original luminescent molecule. The compositions may be cleavably linked to binding molecules to form the e-tag probes.
提供了一种用于多重检测一种或多种配体与靶抗配体结合或相互作用的探针集。检测涉及到由于靶标识别而释放鉴别标记。该探针集包括电泳标记探针或e-tag探针,包括检测区域和称为迁移修饰因子的迁移定义区域,两者都连接到靶标结合基团。将靶抗配体与一组e-tag探针接触,并用选择的切割剂处理接触到的抗配体,导致e-tag报告物和未切割和/或部分切割的e-tag探针的混合物。混合物接触到有效结合到未切割或部分切割的e-tag探针的捕获剂,然后进行电泳分离。在多重检测中,不同的释放的e-tag报告物可以被分离和检测,从而实现靶标的识别。该方法采用包含发光分子的组合物,例如荧光分子,这些分子被修改以提供每种修改后的发光分子的电泳特性,同时保持原始发光分子的吸收、发射和量子产率特性基本相同。这些组合物可以与结合分子可剪切地连接以形成e-tag探针。