检测人肝癌单克隆抗体的改良ELISA法

An improved ELISA for Detection of Monoclonal Antibodies to Human Hepatocellular Carcinoma

用硫酸和鱼精蛋白依次处理微量滴定板,使靶细胞易吸附于滴定板,经适当浓度戊二醛固定,使靶细胞在检测过程中不易脱落,也减少抗原受破坏的可能。以此为基础的ELISA法,用于筛选人肝癌单克隆抗体(单抗),敏感性、特异性及重复性均较好;所得结果与免疫荧光法检测结果有可比性;是大量筛选抗肿瘤单抗的有效手段。

Instead of poly—I—lysine, the microtitre plate is in turn pretreated with concentrated sulphuric acid and 100μg/ ml protamine. The living target cells are well attached to the plate. Fixed with 0.025—0.05% glutaraldehyda, the target cells are suitable for screening monoclonal antibodies by ELISA. This assay is specific, sensitive and well reproductive. It is a useful method for screening large scale spent supernatant of hybridomas and ascites at less expense and time. On the other hand, this method can be also used to detect cellular antigens with either MAbs or conventional antibodies.