申请人:TEIJIN LIMITED
公开号:EP0307480A1
公开(公告)日:1989-03-22
A process for preparing an antibody complex, which comprises modifying part of amino groups of an antibody, whose antigen-binding activity is to be reduced by modification of its amino groups, or of its fragment with a reversible modifier for a proteinic amino group, reacting the antibody or its fragment with a substance having a functional group capable of reacting with an amino group, removing the reversible modifier residue for the proteinic amino group and, where the residue of the substance having a functional group capable of reacting with an amino group is introduced into functional groups other than the amino group, optionally removing such a residue. This process gives an antibody complex which undergoes less reduction in antigen-binding activity, and the complex may possibly be used for affinity chromatography, diagnostic agents, cancer-treating agents, etc.
一种制备抗体复合物的工艺,包括用蛋白氨基的可逆修饰剂修饰抗体(其抗原结合活性将通过修饰其氨基而降低)或其片段的部分氨基,使抗体或其片段与具有能与氨基反应的官能团的物质反应、移除蛋白质氨基的可逆修饰残基,如果具有能与氨基反应的官能团的物质的残基被引入氨基以外的官能团,则可选择移除该残基。这一过程可得到抗原结合活性降低较少的抗体复合物,该复合物可用于亲和层析、诊断药物、癌症治疗药物等。