申请人:BIOSITE DIAGNOSTICS INC.
公开号:EP0475783A1
公开(公告)日:1992-03-18
Means for the detection of free ligand analogue conjugate in fluids from competitive ligand-receptor assay processes. Ligand analogue antibodies that bind the ligand analogue conjugate with substantially greater affinity than their affinity for target ligand are selected and used in competitive ligand-receptor assay processes to bind the free fraction of the ligand analogue conjugate. This means permits the detection of the free fraction of ligand analogue conjugate even in the presence of substantially higher concentrations of free target ligand. For the purposes of the present invention, ligand analogue antibodies are antibodies that exhibit at least 100X greater affinity for the ligand analogue conjugate compared to their affinity for the target ligand.
用于检测竞争性
配体-受体检测过程流体中游离
配体类似物共轭物的方法。
配体类似物
抗体与
配体类似物共轭物的结合亲和力远大于其与目标
配体的结合亲和力,在竞争性
配体-受体检测过程中,选择并使用这种
抗体与
配体类似物共轭物的游离部分结合。这样,即使在游离目标
配体浓度很高的情况下,也能检测
配体类似物共轭物的游离部分。就本发明而言,
配体类似物
抗体是指对
配体类似物共轭物的亲和力比对目标
配体的亲和力至少高 100 倍的
抗体。