The invention belongs to the technical field of biological
medicine, and provides a nano-carrier
drug delivery system loaded with
carboplatin as well as a preparation method and application of the nano-carrier
drug delivery system. The preparation method comprises the following steps: (1) dissolving AZ-COOH, EDCI and HOBT in DMSO, and activating to obtain a first
mixed solution; dSPE-PEG2000-NH2 and TEA are dissolved in DMSO (
dimethyl sulfoxide), and a second
mixed solution is obtained after stirring; dropwise adding the first
mixed solution into the second mixed solution, reacting, dialyzing, and
drying to obtain a nano-carrier DSPE-PEG-CAI; (2) dissolving the nano carrier DSPE-PEG-CAI and
carboplatin in an
organic solvent to obtain an organic phase; adding
ultrapure water, continuously performing ultrasonic treatment, and volatilizing the
organic solvent to obtain a water phase; and carrying out aqueous phase
dialysis, and filtering to obtain a nano
carboplatin DSPE-PEG-CAI-CBP
aqueous solution. The carboplatin-loaded nano-carrier
drug delivery system provided by the invention can improve the targeting property and
intracellular enrichment degree of drugs, and passes through a biological barrier established by a
tumor microenvironment, so that the targeting selectivity to
triple negative breast cancer cells is enhanced, and the side effects of carboplatin treatment are reduced.