Polymer‐Chlorambucil Drug Conjugates: A Dynamic Platform of Anticancer Drug Delivery

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Abstract
Recently, polymer drug conjugates (PDCs) have attracted considerable attention in the treatment of cancer. In this work, a simple strategy has been developed to make PDCs of an antitumor alkylating agent, chlorambucil, using a biocompatible disulphide linker. Chlorambucil‐based chain transfer agent was used to prepare various homopolymers and block copolymers in a controlled fashion via reversible addition–fragmentation chain transfer polymerization. Chlorambucil conjugated block copolymer, poly(polyethylene glycol monomethyl ether methacrylate)‐b‐poly(methyl methacrylate), formed nanoaggregates in aqueous solutions, which are characterized by dynamic light scattering and field emission‐scanning electron microscopy. Finally, the simplicity of the design is exemplified by performing a release study of chlorambucil under reducing condition by using D,L‐dithiothreitol. image

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