Patent ID: 10632071

Abstract:
Disclosed is a preparation method for charge reversal and reversibly crosslinked redox-sensitive nanomicelles, falling within the technical field of biomedical materials. The method comprises: synthesizing thiocinamide from lipoic acid and ethylenediamine under an N,N′-carbonyl diimidazole catalyst; and polymerizing thiocinamide, polyethylene glycol diglycidyl ether and lysine through a nucleophilic addition mechanism to prepare a poly(lysine-co-polyethylene glycol diglycidyl ether-co-thiocinamide) terpolymer. The micelle is endowed with excellent anti-protein nonspecific adsorption and enhanced cell uptake property through a self-assembly and protonation/deprotonation action; and a disulfide bond in lipoyl may form a linear polydisulfide structure under the action of 1,4-dithiothreitol, so that a micelle core is crosslinked, and a crosslinked structure is destroyed in the cell under a redox condition, and controlled release of a drug can be achieved. The Nanomicelle of the present invention is expected to be a carrier of drugs for treating cancers.