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    • 16. 发明申请
    • RECEPTOR FUNCTION ASSAYS
    • 受体功能测定
    • WO1995004136A1
    • 1995-02-09
    • PCT/US1994008571
    • 1994-07-29
    • COR THERAPEUTICS, INC.GIESE, Neill, A.
    • COR THERAPEUTICS, INC.
    • C12N09/12
    • G01N33/5008G01N2333/9121
    • Methods are provided for assaying the function (e.g., activation) of signal-transducing receptors on cells. The methods are useful for identifying compounds that are agonists or antagonists of receptor function. The assays utilize a two-antibody sandwich assay employing an immobilized first antibody that specifically binds and captures the receptor of interest along with any tightly associated proteins or polypeptides and a second antibody directed against (i) an epitope of the receptor that is characteristic of the activated but not the unactivated state, (ii) an epitope of a protein or molecule characteristically bound to activated receptor but not to unactivated receptor, or (iii) an epitope of the receptor that is characteristic of the unactivated but not the activated state. In one embodiment, the level of binding of the second antibody is determined and correlated with the presence of activated receptor, and thus with activation in response to the treatment received by the cells. The methods provided by the invention will find particular use for detecting activation of tyrosine kinase growth factor receptors.
    • 提供了用于测定细胞上信号转导受体的功能(例如激活)的方法。 该方法可用于鉴定作为受体功能的激动剂或拮抗剂的化合物。 该测定法利用采用固定化的第一抗体的双抗体夹心测定法,其特异性结合并捕获感兴趣的受体以及任何紧密相关的蛋白质或多肽,以及针对(i)受体表位的第二抗体,其特征在于 活化但不是未活化状态,(ii)特征性结合活化受体但不结合未活化受体的蛋白质或分子的表位,或(iii)受体的表位,其是未活化但不是活化状态的特征。 在一个实施方案中,确定第二抗体的结合水平并与活化受体的存在相关,并因此响应于由细胞接受的治疗而激活。 本发明提供的方法将特别用于检测酪氨酸激酶生长因子受体的活化。