A compound comprising a target cell-specific portion and a directly or indirectly cytotoxic portion, characterised in that the target cell-specific portion recognises the target cell with high avidity. The cytotoxic portions of the compound may be a subunit of an oligomer, may contain a binding site for a small molecule, may be streptavidin, may be a dimeric ribonuclease or may be DNAse-I. The target cell-specific portion may comprise two or more binding sites for the target cell, may be an antibody or fragment thereof, or may be a ScFv. A compound suitable for cell agglutination, particularly haemagglutination. A compound comprising a mediator portion and a directly or indirectly cytotoxic portion wherein the mediator portion recognises a target cell-specific molecule and provides a means of indirect targeting.
一种由靶细胞特异性部分和直接或间接细胞毒性部分组成的化合物,其特征在于靶细胞特异性部分能高度识别靶细胞。化合物的细胞毒性部分可以是寡聚体的亚基,可以含有小分子的结合位点,可以是
链霉亲和素,可以是二聚
核糖核酸酶,也可以是 DNAse-I。靶细胞特异性部分可包含两个或多个与靶细胞的结合位点,可以是
抗体或其片段,也可以是 ScFv。适用于细胞凝集,特别是血凝的化合物。一种化合物,包括介质部分和直接或间接的细胞毒性部分,其中介质部分可识别靶细胞特异性分子并提供间接靶向手段。