Abstract

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

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