Anticancer drugs delivered by a new drug delivery system reduce tumor size

Researchers have created a drug delivery system (DDS) using a poly (ethylene glycol)-poly(lysine) block copolymer-ubenimex conjugate (PEG-b-PLys(Ube)). The use of this DDS has enabled an increase in the concentration of ubenimex in target CSCs. In addition, combined use of standard anticancer drugs significantly decreased CSCs.