摘要: In the 1980s monoclonal antibodies promised an era of “magic” bullet therapies that could specifically kill tumor cells while leaving healthy tissues intact. But need to covalently couple killing agent (toxin, radioisotopes, etc.) limited their clinical potential. Now, new bispecific (BsAbs, or bi-functional antibodies) have been developed. The prototypic BsAb consists two different specific binding sites, with one directed target antigen on surface cells, and other a trigger molecule.