Abstract
Bispecific antibodies have drawn considerate research interests for therapeutic development. Numerous genetic and chemical methods are established to produce bispecific antibodies with varied formats. This protocol describes a novel approach to the synthesis of bispecific antibodies by utilizing chemically functionalized poly-ADP-ribose polymers derived from post-translational poly-ADP-ribosylation. Basic Protocol 1 includes experimental procedures for expressing and purifying recombinant full-length human poly-ADP-ribose polymerase 1 (PARP1) as well as monoclonal antibodies targeting T-cell CD3 and breast cancer tumor-associated human epidermal growth factor receptor 2 (HER2) molecules. Basic Protocol 2 details methods for enzymatic preparation of functionalized poly-ADP-ribose polymers by PARP1 and chemical conjugation of antibody molecules for bispecific antibody production. © 2023 The Authors. Current Protocols published by Wiley Periodicals LLC. Basic Protocol 1: Expression and purification of PARP1 and antibodies Basic Protocol 2: PARP1 auto-modification and antibody conjugation.
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