ADC Chemical Linkers Are Vital The covalent conjugation of monoclonal antibodies (mAbs) and cytotoxic drugs, known as antibody-drug conjugates (ADCs), is rapidly becoming a powerful component of cancer treatment. Hundreds…
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Pharmaceutical company Centrose, founded by James R. Prudent, Ph.D., developed a new class of antibody drug conjugates called extracellular drug conjugates. Nature Publishing Group published the research as a open access paper in its Molecular Therapy journal.1 Apart from the interesting and important development of a new class of antibody drug conjugate (ADC), the research also showed how important linker length 2 is to the potency and specificity of the EDC.
Thiol reactive crosslinkers are one of the most common classes of crosslinkers in bioconjugation (1). The popularity of conjugation to a thiol is due in part to its presence in many proteins, but they are not as prevalent as amines, which are another site for conjugation. This will allow for greater control of the conjugation. Even greater control of the conjugation process is afforded if a thiol reactive compound is combined with an amine reactive compound to create a heterobifunctional crosslinker.