Provided in the present invention are a di-substituted maleic amide linker conjugated to an antibody and a preparation method and use thereof. In particular, the present invention conjugates a strongly cytotoxic active substance to a biomacromolecule through a class of new linkers. The class of linkers can selectively act simultaneously with disulphide chains, so as to greatly improve the substance homogeneity of a conjugate. The conjugate prepared by the linker of the present invention has a high inhibitory activity on a cell strain expressing the corresponding antigen. Also provided is a method for preparing the above-mentioned conjugate and the use.
本发明提供了一种二取代马来酰胺连接物与
抗体结合的制备方法及其用途。具体而言,本发明通过一类新连接物将一种强烈细胞毒活性物质与
生物大分子结合。这类连接物可以与二
硫键同时选择性地作用,从而极大地提高结合物质的均一性。本发明连接物制备的结合物对表达相应抗原的细胞株具有高抑制活性。还提供了制备上述结合物的方法和用途。