Abstract
Polyglycerol dendrimers as an important class of polymeric materials especially attractive for covalent attachment to therapeutic proteins as a useful alternative to traditional PEGylation procedures. Herein, we combine in vivo noncanonical amino acid (ncAA) incorporation and chemoselective conjugation in vitro to produce novel hybrid protein-dendrimer conjugates with the defined architectures. We incorporated Azidohomoalanine (Aha) as methionine substitute in vivo into various protein scaffolds to allow non-invasive dendrimer conjugations (dendronylation). Our approach makes recombinant proteins accessible for the design of multivalent dendrimer conjugates since it enables the preparation of many sequences with various positions for regioselective dendronylation.
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